Online English Vocabulary Flashcards for High School 10 Words

accessible (adjective) /ækˈsɛs ə bəl/
Definition: Easily approachable, reachable, or available.
Example Sentence: "The book is written in a clear and accessible language, making it easy for readers of all backgrounds to understand."
Synonyms: approachable; attainable; available; convenient; easy; obtainable
Opposite Meaning: inaccessible

administer (verb) /ædˈmɪn ə stər/
Definition: To manage, organize, or supervise the execution of something, such as a task, responsibility, or system.
Example Sentence: "The nurse will administer the vaccine to the patient."
Synonyms: apply; conduct; deliver; direct; dispense; distribute
Opposite Meaning: neglect

amass (verb) /əˈmæs/
Definition: To gather, collect, or accumulate a large quantity of something over time.
Example Sentence: "The entrepreneur worked hard to amass a fortune through his successful business ventures."
Synonyms: accrue; accumulate; aggregate; assemble; collect; compile
Opposite Meaning: disperse

amplify (verb) /ˈæm pləˌfaɪ/
Definition: To increase the intensity, magnitude, or volume of something.
Example Sentence: "The charity organization utilized social media platforms to amplify their fundraising efforts."
Synonyms: augment; boost; enhance; enlarge; escalate; expand
Opposite Meaning: reduce

analects (noun) /ˈæn lˌɛkts/
Definition: A collection of literary or philosophical excerpts or passages from the works of a particular author or a group of authors.
Example Sentence: "The professor shared an inspiring quote from the analects of Confucius during the lecture."
Synonyms: aphorisms; excerpts; fragments; maxims; passages; proverbs
Opposite Meaning: whole

atmospheric (adjective) /ˌæt məsˈfɛr ɪk/
Definition: Pertaining to or creating a particular mood, ambiance, or emotional quality, often associated with a specific environment or setting.
Example Sentence: "The artist's paintings captured the atmospheric beauty of the seaside at sunset."
Synonyms: alluring; ambient; captivating; enchanting; ethereal; evocative
Opposite Meaning: flat

audible (adjective) /ˈɔ də bəl/
Definition: Capable of being heard or perceived by the sense of hearing.
Example Sentence: "The teacher's voice was barely audible over the noisy chatter of the students."
Synonyms: clear; detectable; discernible; distinct; evident; hearable
Opposite Meaning: inaudible

bewail (verb) /bɪˈweɪl/
Definition: To express deep sorrow, grief, or lamentation over a loss, misfortune, or distressing situation.
Example Sentence: "The mourners gathered to bewail the passing of their beloved friend."
Synonyms: bemoan; cry; deplore; grieve; howl; keen
Opposite Meaning: celebrate

bioethics (noun) /ˌbaɪ oʊˈɛθ ɪks/
Definition: The interdisciplinary field of study that examines ethical issues arising from advances in biology, medicine, and healthcare.
Example Sentence: "Bioethics explores the ethical implications of medical advancements."
Synonyms: bioethical; biolaw; biomedicine; biopolicy; biopolitics; biotechnology
Opposite Meaning: disregard

blaze (noun) /bleɪz/
Definition: A large and intense fire, typically producing a bright, hot, and rapidly spreading flame.
Example Sentence: "The firefighters battled the raging blaze for hours to save the building."
Synonyms: achievement; beacon; fervor; fire; flame; glow
Opposite Meaning: extinguish

bombardment (noun) /bɒmˈbɑrd mənt/
Definition: A sustained and intense attack or assault, typically involving the launching of a large number of projectiles or explosives.
Example Sentence: "The city endured a relentless bombardment, reducing buildings to rubble."
Synonyms: assault; attack; barrage; blitz; fire; fusillade
Opposite Meaning: defense

casualty (noun) /ˈkæʒ u əl ti/
Definition: A person who has been injured, killed, or affected as a result of an accident, disaster, conflict, or other unfortunate event.
Example Sentence: "The earthquake resulted in a high number of casualties and widespread devastation."
Synonyms: damage; disaster; fatality; incident; injured; loss
Opposite Meaning: survivor

conclusive (adjective) /kənˈklu sɪv/
Definition: Providing a definitive or final resolution to a matter or question, leaving no room for doubt or further debate.
Example Sentence: "The DNA test provided conclusive evidence linking the suspect to the crime scene."
Synonyms: certain; convincing; decisive; definitive; determining; final
Opposite Meaning: ambiguous

consecutive (adjective) /kənsekjʊtɪv/
Definition: Occurring one after another in an uninterrupted and chronological order.
Example Sentence: "The company experienced four consecutive quarters of record-breaking profits."
Synonyms: constant; continual; continuous; following; ongoing; running
Opposite Meaning: nonsequential

contagion (noun) /kənˈteɪ dʒən/
Definition: The transmission or spread of a disease, illness, or harmful influence from one person, organism, or object to another.
Example Sentence: "The contagion of laughter swept through the room, creating a joyful atmosphere."
Synonyms: contamination; disease; dissemination; epidemic; infection; infestation
Opposite Meaning: cleanliness

conveyance (noun) /kənˈveɪ əns/
Definition: The means of transporting people or goods from one place to another.
Example Sentence: "The real estate agent handled the conveyance of the house sale."
Synonyms: carriage; delivery; freight; haulage; shipment; transfer
Opposite Meaning: immobility

cornerstone (noun) /ˈkɔr nərˌstoʊn/
Definition: A fundamental or essential element that serves as the foundation or basis for something, often metaphorically.
Example Sentence: "Trust is the cornerstone of any healthy relationship."
Synonyms: anchor; basis; bedrock; core; essence; footing
Opposite Meaning: addition

crest (noun) /krɛst/
Definition: The highest point or peak of something, typically referring to the topmost part of a physical object or a natural formation.
Example Sentence: "The surfer rode the crest of the wave with perfect balance."
Synonyms: peak; summit; top; crown; pinnacle; zenith
Opposite Meaning: base

dally (verb) /ˈdali/
Definition: To spend time idly or without purpose, or to engage in a leisurely and playful manner.
Example Sentence: "He loves to dally in the park and watch the birds."
Synonyms: cavort; dawdle; disport; frolic; gambol; linger
Opposite Meaning: hasten

delay (noun) /dɪˈleɪ/
Definition: A period of time during which an event, action, or process is postponed, slowed down, or prolonged.
Example Sentence: "The flight delay resulted in several passengers missing their connecting flights."
Synonyms: bottleneck; deferment; hindrance; holdup; interruption; lag
Opposite Meaning: promptness

devaluate (verb) /diˈvæl yuˌeɪt/
Definition: To reduce or lower the value or worth of something, typically a currency or an asset.
Example Sentence: "Inflation can devaluate the purchasing power of a nation's currency."
Synonyms: belittle; cheapen; deflate; depreciate; deteriorate; diminish
Opposite Meaning: appreciate

discount (verb) /ˈdɪs kaʊnt/
Definition: To reduce or deduct a certain amount or percentage from the original price or value of something.
Example Sentence: "Despite the criticism, he refused to discount his dreams and pursued his passion relentlessly."
Synonyms: decrease; deduct; deprice; devaluate; devalue; disregard
Opposite Meaning: increase

drivel (noun) /ˈdrɪv əl/
Definition: Nonsensical or foolish talk, writing, or ideas.
Example Sentence: "I couldn't bear to listen to another minute of his nonsensical drivel."
Synonyms: babble; balderdash; blather; bunk; claptrap; gibberish
Opposite Meaning: wisdom

envious (adjective) /ˈɛn vi əs/
Definition: Characterized by a strong desire to possess or achieve something that someone else has.
Example Sentence: "The envious neighbor always found a reason to criticize the success of others in the community."
Synonyms: begrudging; covetous; desirous; discontented; grudging; jealous
Opposite Meaning: content

excessive (adjective) /ɪkˈsɛs ɪv/
Definition: Going beyond what is considered normal, reasonable, or appropriate.
Example Sentence: "He faced excessive criticism for a minor mistake."
Synonyms: disproportionate; exorbitant; extravagant; extreme; immoderate; lavish
Opposite Meaning: moderate

exhausting (adjective) /ɪgˈzɔ stɪŋ/
Definition: Physically or mentally draining, resulting in extreme fatigue or weariness.
Example Sentence: "The exam was mentally exhausting, requiring hours of focused concentration."
Synonyms: arduous; debilitating; demanding; draining; enervating; fatiguing
Opposite Meaning: invigorating

extricate (verb) /ˈɛkstrɪkeɪt/
Definition: To free or remove someone or something from a difficult or dangerous situation.
Example Sentence: "He had to extricate himself from the loveless relationship."
Synonyms: clear; detach; disengage; disentangle; extract; liberate
Opposite Meaning: entrap

habituate (verb) /həˈbɪtʃ uˌeɪt/
Definition: To become accustomed or familiar with something through repeated exposure or practice.
Example Sentence: "It takes time to habituate to a new environment."
Synonyms: acclimate; accustom; adapt; adjust; assimilate; attune
Opposite Meaning: alienate

horrid (adjective) /ˈhɔr ɪd/
Definition: Extremely unpleasant, dreadful, or repulsive.
Example Sentence: "The horrid sight of the car accident made me feel sick to my stomach."
Synonyms: abominable; appalling; atrocious; awful; disgusting; dreadful
Opposite Meaning: delightful

hydrodynamic (adjective) /ˌhʌɪdrə(ʊ)dʌɪˈnamɪk/
Definition: Pertaining to the study, behavior, and interactions of fluids, particularly water, in response to external forces.
Example Sentence: "Hydrodynamic drag is the resistance that a fluid exerts on an object moving through it."
Synonyms: aqueous; flow; fluid; fluidic; hydraulic; hydrokinetic
Opposite Meaning: static

inconsistency (noun) /ˌɪn kənˈsɪs tən si/
Definition: The lack of coherence, harmony, or uniformity within something, particularly in terms of ideas, actions, or behavior.
Example Sentence: "The inconsistency in his statements made it difficult to trust his words."
Synonyms: conflict; contradiction; discrepancy; disparity; incompatibility; incongruence
Opposite Meaning: consistency

inedible (adjective) /ɪnˈɛd ə bəl/
Definition: Not suitable or safe to be eaten due to its unpleasant taste, toxicity, or lack of nutritional value.
Example Sentence: "The warning label clearly stated that the product was inedible and should not be ingested."
Synonyms: foul; indigestible; inpalatable; noxious; poisonous; rancid
Opposite Meaning: edible

infatuation (noun) /ɪnˌfætʃ uˈeɪ ʃən/
Definition: An intense but short-lived passion or attraction towards someone or something.
Example Sentence: "She mistook her infatuation for true love, only to realize her mistake later on."
Synonyms: ardor; captivation; crush; desire; enchantment; fancy
Opposite Meaning: indifference

ingrain (verb) /ɪnˈgreɪn/
Definition: To firmly establish or deeply embed something, such as a belief, habit, or characteristic, into one's mind, behavior, or the fabric of a society.
Example Sentence: "They are trying to ingrain a sense of discipline in the new recruits."
Synonyms: condition; embed; engrave; etch; fix; impart
Opposite Meaning: eradicate

inhale (verb) /ɪnˈheɪl/
Definition: To breath in or draw air or another substance into the lungs.
Example Sentence: "The yoga instructor instructed the students to inhale deeply and exhale slowly."
Synonyms: breathe; draw; gasp; gulp; inspire; respire
Opposite Meaning: exhale

insignificant (adjective) /ɪnsɪgnɪfɪkənt/
Definition: Lacking importance, impact, or significance in relation to a particular context or situation.
Example Sentence: "Her worries seemed insignificant when she realized the extent of her friend’s troubles."
Synonyms: immaterial; inconsequential; inconspicuous; irrelevant; minor; negligible
Opposite Meaning: important

instinctive (adjective) /ɪnstɪŋktɪv/
Definition: Pertaining to actions, behaviors, or responses that are innate, intuitive, or natural, rather than learned or consciously thought out.
Example Sentence: "The bird's instinctive migration patterns ensured its survival during the changing seasons."
Synonyms: automatic; ingrained; inherent; innate; intrinsic; intuitive
Opposite Meaning: learned

invest (verb) /ɪnˈvɛst/
Definition: To allocate money, time, or resources into an endeavor or asset with the expectation of achieving a positive return or benefit in the future.
Example Sentence: "She wants to invest in real estate properties."
Synonyms: allocate; back; commit; contribute; deposit; devote
Opposite Meaning: withdraw

invincible (adjective) /ɪnˈvɪn sə bəl/
Definition: Incapable of being defeated, destroyed, or overcome.
Example Sentence: "With his unwavering determination, he felt invincible in the face of any challenge."
Synonyms: bulletproof; impregnable; indefatigable; indomitable; indubitable; infallible
Opposite Meaning: vulnerable

irreproachable (adjective) /ɪrɪˈprəʊtʃəb(ə)l/
Definition: Faultless, blameless, or beyond criticism or reproach.
Example Sentence: "The pilot's safety record was irreproachable, instilling confidence in the passengers."
Synonyms: exceptional; exemplary; faultless; flawless; honorable; immaculate
Opposite Meaning: blameworthy

jubilant (adjective) /ˈdʒu bə lənt/
Definition: Extreme joy, triumph, or exultation.
Example Sentence: "The jubilant crowd erupted in cheers as their team scored the winning goal."
Synonyms: blissful; ecstatic; elated; exhilarated; exuberant; gleeful
Opposite Meaning: dejected

juxtaposition (noun) /ˌdʒʌkstəpəˈzɪʃ(ə)n/
Definition: When two things are placed side by side for comparison, often to highlight the contrast.
Example Sentence: "The film's stark juxtaposition of humor and tragedy kept audiences engaged."
Synonyms: adjacency; alignment; apposition; closeness; coexistence; collocation
Opposite Meaning: separation

liberty (noun) /ˈlɪb ər ti/
Definition: The fundamental concept of personal freedom and autonomy.
Example Sentence: "In a democracy, citizens have the liberty to vote for their preferred political representatives."
Synonyms: autonomy; emancipation; freedom; independence; laissez-faire; liberation
Opposite Meaning: constraint

lowbrow (noun) /ˈloʊˌbraʊ/
Definition: A person or cultural artifact that is considered unsophisticated or lacking in intellectual depth.
Example Sentence: "The film was a lowbrow comedy, filled with slapstick humor and juvenile jokes."
Synonyms: basic; cheesy; crude; juvenile; kitschy; populist
Opposite Meaning: highbrow

majestic (adjective) /məˈdʒɛs tɪk/
Definition: Possessing grandeur, dignity, and awe-inspiring beauty.
Example Sentence: "The majestic sunset painted the sky with hues of gold and pink."
Synonyms: grand; impressive; lofty; magnificent; noble; regal
Opposite Meaning: plain

mosaic (noun) /moʊˈzeɪ ɪk/
Definition: A form of art or decoration created by arranging small, colored pieces of materials, such as glass, stone, or tile, into a pattern or image.
Example Sentence: "She meticulously pieced together a mosaic of vibrant glass tiles to adorn her tabletop."
Synonyms: arrangement; assemblage; bricolage; collage; collection; compilation
Opposite Meaning: uniformity

mural (noun) /ˈmyʊər əl/
Definition: A form of visual art that encompasses a large-scale artwork painted or applied directly onto a wall, ceiling, or other permanent surface.
Example Sentence: "The vibrant mural in the subway station brightened up the daily commute for weary travelers."
Synonyms: artwork; collage; decoration; fresco; graffiti; illustration
Opposite Meaning: blank wall

mutineer (noun) /ˌmyut nˈɪər/
Definition: An individual who participates in a mutiny, which is a rebellion or uprising against authority, typically within a military, naval, or other organized group.
Example Sentence: "The captain's harsh treatment led to the rise of a mutineer among the crew."
Synonyms: agitator; defector; dissenter; insurgent; insurrectionist; rebel
Opposite Meaning: loyalist

neocolonialism (noun) /ˌni oʊ kəˈloʊ ni əˌlɪz əm/
Definition: A contemporary form of domination and control exercised by powerful nations over less developed or formerly colonized countries.
Example Sentence: "Neocolonialism involves the imposition of Western ideologies and values on subordinate nations."
Synonyms: control; dependency; domination; exploitation; hegemony; imperialism
Opposite Meaning: independence

neutral (adjective) /ˈnu trəl/
Definition: Impartiality, absence of bias, or lack of favoritism towards any particular side, opinion, or position.
Example Sentence: "The country declared its intention to remain neutral in the conflict."
Synonyms: balanced; detached; disinterested; equitable; fair; impartial
Opposite Meaning: partial

oceanic (adjective) /ˌoʊ ʃiˈæn ɪk/
Definition: Relating to the ocean, which is the vast body of saltwater that covers a significant portion of the Earth's surface.
Example Sentence: "We embarked on an oceanic adventure, sailing across the vast blue expanse."
Synonyms: abyssal; aquatic; marine; maritime; nautical; pelagic
Opposite Meaning: terrestrial

oppose (verb) /əˈpəʊz/
Definition: To actively resist or object to something.
Example Sentence: "The employees oppose the company's decision to freeze their pay."
Synonyms: block; combat; confront; contest; contradict; counter
Opposite Meaning: support

overwhelm (verb) /ˌəʊvəˈwɛlm/
Definition: To overpower or affect someone or something in a way that is difficult to manage or control.
Example Sentence: "The intense heat and humidity can easily overwhelm the body."
Synonyms: burden; drown; flood; overburden; overcome; overpower
Opposite Meaning: underwhelm

partake (verb) /pɑrˈteɪk/
Definition: To participate in or share something, such as an activity, event, food, or experience.
Example Sentence: "It's always good to partake in new experiences and explore different things."
Synonyms: consume; engage; enjoy; experience; indulge; join
Opposite Meaning: abstain

parvis (noun) /ˈpɑr vɪs/
Definition: A term predominantly used in architecture to describe an open area or courtyard in front of a religious building, such as a church or cathedral.
Example Sentence: "The parishioners gathered on the parvis before entering the grand cathedral."
Synonyms: atrium; concourse; courtyard; esplanade; forecourt; forum
Opposite Meaning: interior

peaceful (adjective) /ˈpis fəl/
Definition: Tranquility, harmony, and the absence of conflict or disturbance.
Example Sentence: "The sun set over the horizon, casting a peaceful glow across the tranquil lake."
Synonyms: calm; harmonious; hushed; pacific; placid; quiet
Opposite Meaning: chaotic

pertain (verb) /pəˈteɪn/
Definition: To be relevant or somehow associated with the subject being referenced.
Example Sentence: "The documents pertain to the legal case we discussed yesterday."
Synonyms: affect; appertain; apply; associate; befit; belong
Opposite Meaning: differ

polish (verb) /ˈpɒl ɪʃ/
Definition: To make something smooth and shiny by rubbing or applying a substance.
Example Sentence: "The debate team members needed to polish their arguments for the final competition."
Synonyms: buff; burnish; cleanse; finish; glaze; gloss
Opposite Meaning: tarnish

predilection (noun) /ˌpriːdɪˈlɛkʃn/
Definition: A strong liking or preference for something, usually a particular activity or thing.
Example Sentence: "His predilection for adventure led him to explore remote and dangerous places."
Synonyms: fondness; inclination; leaning; partiality; penchant; proclivity
Opposite Meaning: aversion

prehistoric (adjective) /ˌpri hɪˈstɔr ɪk/
Definition: Predating recorded history or the existence of written records.
Example Sentence: "The cave paintings provided a glimpse into prehistoric art and symbolism."
Synonyms: ancestral; ancient; antediluvian; antiquated; archaic; bygone
Opposite Meaning: modern

presumption (noun) /prɪˈzʌmp ʃən/
Definition: The act or state of assuming something to be true or valid without sufficient evidence or proof.
Example Sentence: "She challenged his presumption, demanding concrete proof to support his claims."
Synonyms: assumption; belief; conclusion; conjecture; guess; hypothesis
Opposite Meaning: proof

prior (adjective) /ˈpraɪ ər/
Definition: Existing or occurring before a specific time, event, or point in a sequence.
Example Sentence: "Christopher had a prior engagement, so he couldn't attend the party."
Synonyms: antecedent; anterior; before; earlier; foregoing; former
Opposite Meaning: subsequent

redundancy (noun) /rɪˈdʌn dən si/
Definition: The state or quality of excessive or unnecessary repetition, duplication, or overlap.
Example Sentence: "The report contained a lot of redundancy, with the same information repeated multiple times."
Synonyms: duplication; excess; excessiveness; overflow; profusion; repetition
Opposite Meaning: necessity

reflex (noun) /ˈriːflɛks/
Definition: An automatic and often involuntary response or action exhibited by the body or a part of the body in reaction to a specific stimulus.
Example Sentence: "The knee-jerk reflex was just one of many responses tested by the neurologist."
Synonyms: conditioned; feedback; impulsive; involuntary; jerk; Pavlovian
Opposite Meaning: deliberation

registry (noun) /ˈrɛdʒ ə stri/
Definition: An official list, record, or database that systematically collects and stores information about specific individuals, objects, or events.
Example Sentence: "The hospital maintains a registry of organ donors."
Synonyms: archive; catalog; database; directory; index; inventory
Opposite Meaning: deletion

reputation (noun) /repjʊteɪʃən/
Definition: The overall perception, estimation, or assessment that others have of a person, organization, or entity based on their past actions, behavior, or achievements.
Example Sentence: "The university has a long-standing reputation for academic excellence."
Synonyms: character; credibility; eminence; fame; honor; image
Opposite Meaning: anonymity

screwball (noun) /ˈskruˌbɔl/
Definition: Peculiar, eccentric, or characterized by unconventional behavior or ideas.
Example Sentence: "The screwball idea of having a beach party in the middle of winter amused everyone."
Synonyms: bizarre; eccentric; kooky; nutty; odd; offbeat
Opposite Meaning: conventional

skulk (verb) /skʌlk/
Definition: To move stealthily or furtively, often with the intention of avoiding detection or attention.
Example Sentence: "The thief tried to skulk away unnoticed after stealing the purse."
Synonyms: creep; hide; hover; lurk; prowl; pussyfoot
Opposite Meaning: confront

soubriquet (noun) /ˈsu brəˌkeɪ/
Definition: A nickname or a descriptive term that is used to identify or refer to a person, often replacing or accompanying their given name.
Example Sentence: "His soubriquet, "The Professor," reflected his profound knowledge and scholarly demeanor."
Synonyms: alias; appellation; byname; cognomen; epithet; handle
Opposite Meaning: formal name

tardiness (noun) /ˈtɑːdɪnəs/
Definition: The quality or state of being late or delayed, particularly in terms of punctuality or meeting established schedules, appointments, or deadlines.
Example Sentence: "Tardiness was not tolerated in the strict military academy."
Synonyms: belatedness; delay; dilatoriness; laggardness; lateness; laziness
Opposite Meaning: punctuality

unbeknown (adjective) /ˌʌnbɪˈnəʊn/
Definition: Happening or occurring without someone's knowledge or awareness.
Example Sentence: "Unbeknown to the crew, the ship was headed towards a dangerous storm."
Synonyms: clandestinely; covertly; furtively; quietly; secretly; stealthily
Opposite Meaning: aware

untoward (adjective) /ˌʌntəˈwɔːd/
Definition: Unexpected, unfavorable, or inappropriate in a situation, often suggesting an element of misfortune or discomfort.
Example Sentence: "He was careful not to say anything untoward in the presence of the CEO."
Synonyms: adverse; awkward; inappropriate; inauspicious; inconvenient; indecorous
Opposite Meaning: suitable

viscosity (noun) /vɪˈskɒs ɪ ti/
Definition: The measure of a substance's resistance to flow or deformation.
Example Sentence: "The syrup's high viscosity made it difficult to drizzle on the pancakes."
Synonyms: clarity; cohesiveness; consistency; density; flowability; fluidity
Opposite Meaning: fluidity

void (adjective) /vɔɪd/
Definition: Completely empty, devoid of content, or lacking any substance or meaning.
Example Sentence: "His heart felt empty and void after the loss of his loved one."
Synonyms: bare; barren; blank; desolate; devoid; empty
Opposite Meaning: full

voluminous (adjective) /vəˈluːmɪnəs/
Definition: Exceptionally large, extensive, or spacious, often implying a substantial amount of material, content, or physical space.
Example Sentence: "The professor's voluminous knowledge on the subject was apparent in his lectures."
Synonyms: ample; capacious; cavernous; comprehensive; copious; numerous
Opposite Meaning: cramped