English Antonyms for TOEFL 11 Vocabulary Words – Online Quiz!

acquire (verb) /əˈkwaɪər/
Definition: To obtain, gain, or procure something, typically through effort, action, or exchange.
Antonyms quiz: Choose the opposite meaning of acquire.
Options: achieve; attain; collect; lose
Answer: lose
Example sentence: "We can acquire the necessary materials for the workshop."

activate (verb) /ˈæk təˌveɪt/
Definition: To initiate, start, or set in motion a process, system, device, or function.
Antonyms quiz: Choose the opposite meaning of activate.
Options: animate; awaken; enable; deactivate
Answer: deactivate
Example sentence: "The remote control can activate the garage door."

acuity (noun) /əˈkjuːɪti/
Definition: The sharpness or keenness of a person's perception, senses, or mental faculties, often denoting a high level of sensitivity and precision.
Antonyms quiz: Choose the opposite meaning of acuity.
Options: acuteness; astuteness; clarity; dullness
Answer: dullness
Example sentence: "The chess player's mental acuity and strategic thinking led to many victories."

annals (noun) /ˈænlz/
Definition: A chronological record of events, especially those of historical importance.
Antonyms quiz: Choose the opposite meaning of annals.
Options: accounts; archives; chronicles; future
Answer: future
Example sentence: "The annals of science document groundbreaking discoveries."

anthropology (noun) /ˌanθrəˈpɒlədʒi/
Definition: The study of human societies, cultures, and development, both past and present.
Antonyms quiz: Choose the opposite meaning of anthropology.
Options: archaeology; cultural; culture; biology
Answer: biology
Example sentence: "She pursued a degree in anthropology to understand different cultural perspectives."

antiquated (adjective) /ˈantɪkweɪtɪd/
Definition: Old-fashioned, outdated, or no longer in use due to the passage of time and changing trends or technologies.
Antonyms quiz: Choose the opposite meaning of antiquated.
Options: ancient; antique; archaic; modern
Answer: modern
Example sentence: "Her taste in furniture leaned towards the antiquated, with a love for vintage pieces."

applicant (noun) /ˈæp lɪ kənt/
Definition: An individual who applies for a job, position, program, membership, or any other opportunity that requires an official request or application.
Antonyms quiz: Choose the opposite meaning of applicant.
Options: appellant; aspirant; candidate; incumbent
Answer: incumbent
Example sentence: "The selection committee reviewed each applicant's qualifications."

articulate (adjective) /ɑːˈtɪkjʊlət/
Definition: Having the ability to express oneself clearly, effectively and in an organized way, whether it be through speech or writing.
Antonyms quiz: Choose the opposite meaning of articulate.
Options: clear; coherent; communicative; inarticulate
Answer: inarticulate
Example sentence: "The speaker was articulate in their delivery of the speech."

audible (adjective) /ˈɔ də bəl/
Definition: Capable of being heard or perceived by the sense of hearing.
Antonyms quiz: Choose the opposite meaning of audible.
Options: clear; detectable; discernible; inaudible
Answer: inaudible
Example sentence: "The concert was so loud that the music was clearly audible outside the venue."

audio (adjective) /ˈɔ diˌoʊ/
Definition: Relating to the sense of hearing or the reproduction, transmission, or processing of sound.
Antonyms quiz: Choose the opposite meaning of audio.
Options: acoustical; audible; auditory; silent
Answer: silent
Example sentence: "His audio equipment included high-end speakers and a state-of-the-art amplifier."

autonomous (adjective) /ɔːˈtɒnəməs/
Definition: Having the ability to function independently and self-govern without external control or influence.
Antonyms quiz: Choose the opposite meaning of autonomous.
Options: contained; determining; freestanding; dependent
Answer: dependent
Example sentence: "The company is developing an autonomous delivery system."

benchmark (noun) /ˈbɛn(t)ʃmɑːk/
Definition: A standard or point of reference against which the performance or quality of something is measured.
Antonyms quiz: Choose the opposite meaning of benchmark.
Options: barometer; criterion; example; deviation
Answer: deviation
Example sentence: "The benchmark for success in this industry is achieving a 20% profit margin."

bioethics (noun) /ˌbaɪ oʊˈɛθ ɪks/
Definition: The interdisciplinary field of study that examines ethical issues arising from advances in biology, medicine, and healthcare.
Antonyms quiz: Choose the opposite meaning of bioethics.
Options: bioethical; biolaw; biomedicine; disregard
Answer: disregard
Example sentence: "Ethical debates in bioethics shape healthcare policies and regulations."

calibrate (verb) /ˈkalɪbreɪt/
Definition: To adjust or standardize a device, instrument, or system to ensure accurate and consistent performance.
Antonyms quiz: Choose the opposite meaning of calibrate.
Options: align; balance; gauge; disorganize
Answer: disorganize
Example sentence: "Mechanics calibrate car engines to optimize fuel efficiency."

cause (noun) /kɔz/
Definition: The reason, motive, or factor that gives rise to a particular event, action, or condition.
Antonyms quiz: Choose the opposite meaning of cause.
Options: basis; factor; grounds; effect
Answer: effect
Example sentence: "The charity organization raises funds for a noble cause."

civil (adjective) /ˈsɪv əl/
Definition: Pertaining to matters concerning citizens, society, or the general public.
Antonyms quiz: Choose the opposite meaning of civil.
Options: affable; civilized; considerate; rude
Answer: rude
Example sentence: "The judge maintained a civil demeanor in the courtroom, treating all parties with fairness and respect."

combustion (noun) /kəmˈbʌs tʃən/
Definition: A chemical process characterized by the rapid release of energy in the form of heat and light resulting from the reaction between a fuel and an oxidizing agent, typically oxygen.
Antonyms quiz: Choose the opposite meaning of combustion.
Options: burning; conflagration; enflaming; extinguishment
Answer: extinguishment
Example sentence: "The combustion of fossil fuels is a major contributor to greenhouse gas emissions."

conceptual (adjective) /kənˈsɛp tʃu əl/
Definition: Relating to or based on abstract ideas, concepts, or mental frameworks rather than concrete or physical aspects.
Antonyms quiz: Choose the opposite meaning of conceptual.
Options: abstract; cerebral; ideational; concrete
Answer: concrete
Example sentence: "The team engaged in a conceptual discussion to generate innovative ideas for the project."

confine (verb) /kənˈfʌɪn/
Definition: To restrict or limit the movement or freedom of a person or group.
Antonyms quiz: Choose the opposite meaning of confine.
Options: cage; cap; circumscribe; free
Answer: free
Example sentence: "The doctor advises you to confine your activities after surgery."

contour (noun) /ˈkɒn tʊər/
Definition: The outline or shape of an object, surface, or area.
Antonyms quiz: Choose the opposite meaning of contour.
Options: boundary; configuration; curve; center
Answer: center
Example sentence: "The makeup artist used contour to enhance the model's cheekbones and create dimension."

delineate (verb) /dɪˈlɪnɪeɪt/
Definition: To describe, depict or outline something in a clear and detailed way.
Antonyms quiz: Choose the opposite meaning of delineate.
Options: sketch; outline; trace; confuse
Answer: confuse
Example sentence: "The teacher will delineate the expectations for the class project."

deploy (verb) /dɪˈplɔɪ/
Definition: To position or organize something or someone for a particular purpose.
Antonyms quiz: Choose the opposite meaning of deploy.
Options: activate; assemble; distribute; withdraw
Answer: withdraw
Example sentence: "To combat the forest fire, authorities will deploy additional firefighters and equipment."

detain (verb) /dɪˈteɪn/
Definition: To keep someone in custody or under restraint, typically by legal authority or formal order.
Antonyms quiz: Choose the opposite meaning of detain.
Options: apprehend; arrest; capture; release
Answer: release
Example sentence: "Customs officers may detain goods that are improperly declared."

devastation (noun) /ˌdɛv əˈsteɪ ʃən/
Definition: The widespread and severe damage, destruction, or ruin caused by a catastrophic event or a deeply distressing experience.
Antonyms quiz: Choose the opposite meaning of devastation.
Options: calamity; catastrophe; decimation; restoration
Answer: restoration
Example sentence: "The earthquake's devastation was evident in the crumbled buildings and displaced families."

dilate (verb) /dʌɪˈleɪt/
Definition: To expand, widen, or enlarge something, typically by increasing its physical dimensions or the space it occupies.
Antonyms quiz: Choose the opposite meaning of dilate.
Options: broaden; distend; enlarge; contract
Answer: contract
Example sentence: "Emotional stress can cause blood vessels to dilate, leading to a flushed appearance."

discrepancy (noun) /dɪˈskrɛpnsi/
Definition: A difference or inconsistency between two or more things that are supposed to be the same or similar.
Antonyms quiz: Choose the opposite meaning of discrepancy.
Options: contradiction; difference; disagreement; agreement
Answer: agreement
Example sentence: "There was a significant discrepancy between the eyewitness accounts of the incident."

dismantle (verb) /dɪsˈmant(ə)l/
Definition: To taking apart, disassemble, or deconstruct a structure, object, system, or organization, often with the intent to remove or render it non-functional.
Antonyms quiz: Choose the opposite meaning of dismantle.
Options: deconstruct; demolish; detach; construct
Answer: construct
Example sentence: "The government's decision to dismantle the old factory sparked economic concerns."

distinct (adjective) /dɪsˈtɪŋkt/
Definition: Easily distinguishable from others, either because of its unique characteristics or clear boundaries.
Antonyms quiz: Choose the opposite meaning of distinct.
Options: clear; conspicuous; different; indistinct
Answer: indistinct
Example sentence: "The artist's style was distinct, marked by vibrant colors and bold strokes."

economical (adjective) /ˌɛk əˈnɒm ɪ kəl/
Definition: Efficient and prudent in the use of resources, especially when it comes to saving time, money, or materials.
Antonyms quiz: Choose the opposite meaning of economical.
Options: careful; conserving; economizing; wasteful
Answer: wasteful
Example sentence: "He was economical with his time, always finding ways to be more efficient."

essential (adjective) /əˈsɛn ʃəl/
Definition: Absolutely necessary, fundamental, or vital.
Antonyms quiz: Choose the opposite meaning of essential.
Options: critical; crucial; fundamental; nonessential
Answer: nonessential
Example sentence: "Effective communication is essential for fostering strong relationships."

etymology (noun) /ˌet̬.ɪˈmɑː.lə.dʒi/
Definition: The study of the origin and history of words, their meanings, and how they have evolved over time.
Antonyms quiz: Choose the opposite meaning of etymology.
Options: ancestry; birth; derivation; present
Answer: present
Example sentence: "The professor explained the etymology of the term "renaissance" during the art history lecture."

evidence (noun) /ˈɛv ɪ dəns/
Definition: Facts, information, or materials that support or demonstrate the truth or existence of something.
Antonyms quiz: Choose the opposite meaning of evidence.
Options: confirmation; corroboration; data; disproof
Answer: disproof
Example sentence: "The fingerprints found on the weapon were vital evidence in linking the suspect to the murder."

examination (noun) /ɪgˌzæm əˈneɪ ʃən/
Definition: A formal assessment or evaluation of knowledge, skills, or understanding in a particular subject or field.
Antonyms quiz: Choose the opposite meaning of examination.
Options: analysis; appraisal; assessment; neglect
Answer: neglect
Example sentence: "The medical examination revealed no signs of illness or abnormalities."

experimental (adjective) /ɪkˌspɛr əˈmɛn tl/
Definition: Involving or relating to the process of conducting experiments or tests to explore new ideas, methods, or approaches.
Antonyms quiz: Choose the opposite meaning of experimental.
Options: exploratory; groundbreaking; innovative; proven
Answer: proven
Example sentence: "The band's new album features a unique and experimental sound."

fathom (verb) /ˈfað(ə)m/
Definition: To understand or comprehend something deeply or thoroughly, especially when it is complex, profound, or difficult to grasp.
Antonyms quiz: Choose the opposite meaning of fathom.
Options: appreciate; apprehend; cognize; misunderstand
Answer: misunderstand
Example sentence: "The mathematician spent decades trying to fathom the intricacies of a particularly complex equation."

gratuitous (adjective) /ɡrəˈtjuːɪtəs/
Definition: Unnecessary, excessive, or without reasonable justification.
Antonyms quiz: Choose the opposite meaning of gratuitous.
Options: baseless; excessive; extraneous; essential
Answer: essential
Example sentence: "The actor's gratuitous use of profanity was unnecessary."

hence (adverb) /hɛns/
Definition: Used to indicate a consequence or a result that follows logically from a previous statement or situation.
Antonyms quiz: Choose the opposite meaning of hence.
Options: accordingly; consequently; ergo; previously
Answer: previously
Example sentence: "The restaurant received several complaints about their service; hence, they decided to hire more staff."

hypothesis (noun) /hʌɪˈpɒθɪsɪs/
Definition: An educated guess or a proposed explanation for a phenomenon or a pattern of observations.
Antonyms quiz: Choose the opposite meaning of hypothesis.
Options: conjecture; hunch; postulate; fact
Answer: fact
Example sentence: "The students conducted experiments to test their hypothesis about plant growth."

illegible (adjective) /ɪˈlɛdʒɪbl/
Definition: Cannot be read or deciphered due to its unclear, messy, or unreadable writing or printing.
Antonyms quiz: Choose the opposite meaning of illegible.
Options: crabbed; faint; indecipherable; legible
Answer: legible
Example sentence: "The hurriedly written note was illegible, leaving us confused about its contents."

implement (verb) /ˈɪmpləmənt/
Definition: To put into effect a plan, decision, or agreement.
Antonyms quiz: Choose the opposite meaning of implement.
Options: administer; apply; complete; neglect
Answer: neglect
Example sentence: "Our team has been working hard to implement the changes recommended by the consultant."

improvised (adjective) /ˈɪm prəˌvaɪzd/
Definition: Created, performed, or done on the spot or without prior planning or preparation.
Antonyms quiz: Choose the opposite meaning of improvised.
Options: ad-lib; extemporaneous; extemporary; planned
Answer: planned
Example sentence: "In the absence of a recipe, she improvised and created a delicious meal using whatever ingredients were available."

independence (noun) /ˌɪn dɪˈpɛn dəns/
Definition: The state or condition of being free from external control, influence, or reliance.
Antonyms quiz: Choose the opposite meaning of independence.
Options: autarky; autonomy; emancipation; dependence
Answer: dependence
Example sentence: "The teenager yearned for independence and eagerly awaited the day he could make his own decisions."

intuitive (adjective) /ɪnˈtjuːɪtɪv/
Definition: Able to understand or know something without the need for conscious reasoning or explicit instruction.
Antonyms quiz: Choose the opposite meaning of intuitive.
Options: automatic; inborn; inherent; calculated
Answer: calculated
Example sentence: "The artist's intuitive approach to painting allows for free expression."

inventiveness (noun) /ɪnˈvɛntɪvnəs/
Definition: The quality or characteristic of being creative, resourceful, and capable of generating new and original ideas or solutions.
Antonyms quiz: Choose the opposite meaning of inventiveness.
Options: cleverness; creativity; genius; unoriginality
Answer: unoriginality
Example sentence: "The company encourages its employees to embrace inventiveness and think creatively."

language (noun) /ˈlæŋ gwɪdʒ/
Definition: A structured system of communication that enables individuals or communities to convey meaning, thoughts, and ideas through a shared set of symbols, sounds, and rules.
Antonyms quiz: Choose the opposite meaning of language.
Options: communication; dialect; expression; silence
Answer: silence
Example sentence: "Learning a new language opens up opportunities for cultural immersion and global communication."

legacy (noun) /ˈlɛɡəsi/
Definition: The lasting impact or influence that a person, event, or organization has had on society and the culture through their accomplishments or contributions.
Antonyms quiz: Choose the opposite meaning of legacy.
Options: aftermath; consequences; endowment; disappearance
Answer: disappearance
Example sentence: "The legacy of the civil rights movement continues to inspire social change."

mandatory (adjective) /ˈmandət(ə)ri/
Definition: Required, obligatory, or essential according to a specific rule, regulation, or directive.
Antonyms quiz: Choose the opposite meaning of mandatory.
Options: binding; essential; forced; optional
Answer: optional
Example sentence: "Vaccination is now mandatory for international travel."

mausoleum (noun) /ˌmɔːsəˈliːəm/
Definition: A large, impressive tomb or a building specifically designed to hold the remains of a deceased person or a family.
Antonyms quiz: Choose the opposite meaning of mausoleum.
Options: catacomb; columbarium; crypt; house
Answer: house
Example sentence: "The grand mausoleum housed the remains of a legendary ruler."

metamorphosis (noun) /ˌmɛt əˈmɔr fə sɪs/
Definition: The process of transformation or change, often in a dramatic and profound way.
Antonyms quiz: Choose the opposite meaning of metamorphosis.
Options: alteration; change; conversion; stasis
Answer: stasis
Example sentence: "The company's metamorphosis was successful, and it rebranded itself as a leader in sustainable fashion."

monarch (noun) /ˈmɒnək/
Definition: A supreme ruler or head of state who holds a position of ultimate authority and often possesses hereditary or sovereign power.
Antonyms quiz: Choose the opposite meaning of monarch.
Options: crown; emperor; empress; commoner
Answer: commoner
Example sentence: "The political advisors surrounding the monarch were highly skilled, shaping policies that promoted prosperity."

novelty (noun) /ˈnɒvlti/
Definition: New, original, or unusual, often with an element of surprise or excitement.
Antonyms quiz: Choose the opposite meaning of novelty.
Options: curiosity; freshness; marvel; banality
Answer: banality
Example sentence: "She had a penchant for collecting novelty items from different countries."

orbital (adjective) /ˈɔr bɪ tl/
Definition: Relating to or associated with an orbit, which is the path an object takes around another object in space.
Antonyms quiz: Choose the opposite meaning of orbital.
Options: circular; circumferential; circumscribing; terrestrial
Answer: terrestrial
Example sentence: "The telescope captured stunning images of distant galaxies from its orbital vantage point."

peak (noun) /pik/
Definition: The pointed or highest part of a mountain, hill, or any elevated area.
Antonyms quiz: Choose the opposite meaning of peak.
Options: acme; apex; climax; base
Answer: base
Example sentence: "The mountaineer had a sense of accomplishment as he reached the peak after a grueling climb."

periphery (noun) /pəˈrɪf ə ri/
Definition: The outer boundary or edge of something, typically a physical object, space, or concept.
Antonyms quiz: Choose the opposite meaning of periphery.
Options: border; borderland; boundary; center
Answer: center
Example sentence: "The city's development extended beyond the urban core into the periphery."

perspective (noun) /pəˈspɛktɪv/
Definition: The way in which something is viewed or considered.
Antonyms quiz: Choose the opposite meaning of perspective.
Options: angle; aspect; attitude; ignorance
Answer: ignorance
Example sentence: "The historical perspective helped to understand the current situation."

preliminary (adjective) /prɪˈlɪmɪn(ə)ri/
Definition: Done or created in advance of a more complete or final version.
Antonyms quiz: Choose the opposite meaning of preliminary.
Options: exploratory; initial; introductory; final
Answer: final
Example sentence: "The preliminary sketches laid the foundation for the artwork."

primate (noun) /ˈpraɪ meɪt/
Definition: A member of the order Primates, which includes humans, apes, monkeys, and prosimians.
Antonyms quiz: Choose the opposite meaning of primate.
Options: ape; baboon; chimpanzee; non-primate
Answer: non-primate
Example sentence: "The scientist conducted research on primate behavior in the rainforest."

qualitative (adjective) /ˈkwɒl ɪˌteɪ tɪv/
Definition: Qualities or attributes that cannot be easily measured or quantified using numerical values or metrics.
Antonyms quiz: Choose the opposite meaning of qualitative.
Options: contextual; descriptive; experiential; quantitative
Answer: quantitative
Example sentence: "The qualitative analysis of the literary text delved into the symbolism and themes present in the writing."

quota (noun) /ˈkwoʊtə/
Definition: A specified amount or portion of something that is allocated or assigned to a particular individual, group, or entity.
Antonyms quiz: Choose the opposite meaning of quota.
Options: allocation; allotment; allowance; excess
Answer: excess
Example sentence: "She exceeded her annual production quota."

ravine (noun) /rəˈviːn/
Definition: A deep and narrow valley or gorge that is typically formed by the erosion of water flowing through rock formations.
Antonyms quiz: Choose the opposite meaning of ravine.
Options: canyon; chasm; couloir; plateau
Answer: plateau
Example sentence: "He was amazed by the beauty of the wildflowers growing along the banks of the ravine."

realm (noun) /relm/
Definition: A distinct and defined domain or sphere that encompasses a particular area of knowledge, existence, or activity.
Antonyms quiz: Choose the opposite meaning of realm.
Options: arena; domain; field; void
Answer: void
Example sentence: "Exploring the realm of art allows us to appreciate the beauty and creativity of human expression."

rejuvenate (verb) /rɪˈdʒuːvɪneɪt/
Definition: To restore or revitalize something to a more youthful or vigorous state.
Antonyms quiz: Choose the opposite meaning of rejuvenate.
Options: reanimate; refresh; regenerate; age
Answer: age
Example sentence: "The athlete took a break to rejuvenate his body before returning to training."

reverberation (noun) /rɪˌvɜr bəˈreɪ ʃən/
Definition: The prolonged and echoing sound that occurs when sound waves bounce off surfaces and continue to resonate in an enclosed or confined space.
Antonyms quiz: Choose the opposite meaning of reverberation.
Options: boom; bounce; echo; silence
Answer: silence
Example sentence: "The cathedral's architecture enhanced the reverberation of the organ music during the service."

stagnate (verb) /staɡˈneɪt
Definition: To become or remain inactive or stale, often with little or no growth, advancement, or development.
Antonyms quiz: Choose the opposite meaning of stagnate.
Options: decay; decline; deteriorate; progress
Answer: progress
Example sentence: "If you don't take action, your career may stagnate."

stratum (noun) /ˈstrɑːtəm/
Definition: A level or class in a particular system of organization or categorization.
Antonyms quiz: Choose the opposite meaning of stratum.
Options: bracket; caste; category; jumble
Answer: jumble
Example sentence: "The stratum of sediment at the dig site suggested an ancient civilization had lived there."

submit (verb) /səbˈmɪt/
Definition: To present or yield something for consideration or judgment, often to a higher authority or decision-maker.
Antonyms quiz: Choose the opposite meaning of submit.
Options: add; affix; annex; withhold
Answer: withhold
Example sentence: "The team plans to submit their findings for publication."

subsequent (adjective) /sʌbsɪkwənt
Definition: Coming after or following in order or sequence.
Antonyms quiz: Choose the opposite meaning of subsequent.
Options: after; consequent; ensuing; preceding
Answer: preceding
Example sentence: "The subsequent actions of the suspect raised further suspicions among the investigators."

suitable (adjective) /ˈsu tə bəl/
Definition: Appropriate, fitting, or well-suited for a particular purpose, circumstance, or individual.
Antonyms quiz: Choose the opposite meaning of suitable.
Options: adequate; applicable; appropriate; unsuitable
Answer: unsuitable
Example sentence: "The teacher selected a suitable textbook for the course material."

syllable (noun) /ˈsɪl ə bəl/
Definition: A basic unit of sound in a word, typically consisting of a vowel or a combination of consonants and a vowel.
Antonyms quiz: Choose the opposite meaning of syllable.
Options: accent; articulation; beat; word
Answer: word
Example sentence: "Clapping your hands can help children identify the syllables in words."

tangible (noun) /ˈtandʒɪbl/
Definition: Something that is perceptible to the senses, particularly touch, and can be observed or felt.
Antonyms quiz: Choose the opposite meaning of tangible.
Options: actual; concrete; definite; intangible
Answer: intangible
Example sentence: "The tangible tension in the room was impossible to ignore."

tentative (adjective) /ˈtɛntətɪv/
Definition: Uncertain, hesitant, or subject to change, often during the early stages of development or planning.
Antonyms quiz: Choose the opposite meaning of tentative.
Options: cautious; conditional; conjectural; definite
Answer: definite
Example sentence: "The team made tentative progress on the challenging project."

understanding (noun) /ˌʌn dərˈstæn dɪŋ/
Definition: The ability to comprehend, grasp, or make sense of something.
Antonyms quiz: Choose the opposite meaning of understanding.
Options: appreciation; awareness; cognition; misunderstanding
Answer: misunderstanding
Example sentence: "The scientist's groundbreaking research deepened our understanding of the universe."

usable (adjective) /ˈyu zə bəl/
Definition: Capable of being used, functional, or suitable for its intended purpose.
Antonyms quiz: Choose the opposite meaning of usable.
Options: accessible; applicable; convenient; unusable
Answer: unusable
Example sentence: "The website's responsive design made it usable on both desktop and mobile devices."

vertical (adjective) /ˈvɜr tɪ kəl/
Definition: Perpendicular to the horizontal plane or parallel to the force of gravity.
Antonyms quiz: Choose the opposite meaning of vertical.
Options: elevated; erect; orthogonal; horizontal
Answer: horizontal
Example sentence: "The bookshelf had both vertical and horizontal compartments for storing different-sized items."

wavering (adjective) /ˈweɪ vər ɪŋ/
Definition: Uncertain, indecisive, or unsteady.
Antonyms quiz: Choose the opposite meaning of wavering.
Options: ambivalent; faltering; fickle; steady
Answer: steady
Example sentence: "The politician's wavering support for the bill caused controversy."