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Online English Vocabulary Flashcards for Middle School 12 Words

Vocabulary Lists  >  Middle School  >  Middle School 12

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Learn Middle School 12 vocabulary words with this free 65-card online vocabulary flashcard study set. Flip each flash card to see the part of speech, definition, and example sentence.

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Dive into words like "pivotal," "vivid," and "affable"! Designed for 10-14 year-olds, this list of 65 words will expand your vocabulary and spark your imagination.

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acute

How to pronounce acute (audio)

Includes synonyms, etymology, and a detailed definition.

Part of Speech

adjective

Definition

Sharp, intense, or severe in its nature, often referring to a sudden onset or a high degree of intensity.

Example Sentence

"The patient was suffering from acute pain in her abdomen."

Complete Flashcards List for Middle School 12 with Definitions, POS, IPA, Examples, Synonyms, and Antonyms

acute (adjective) /əˈkjuːt/
Definition: Sharp, intense, or severe in its nature, often referring to a sudden onset or a high degree of intensity.
Example Sentence: "The patient was suffering from acute pain in her abdomen."
Synonyms: sharp; keen; penetrating; critical; sudden; extreme
Opposite Meaning: mild

affable (adjective) /ˈafəbl/
Definition: Friendly, approachable, and easy to engage with in social interactions.
Example Sentence: "His affable nature helped diffuse tense situations during team meetings."
Synonyms: agreeable; amiable; civil; congenial; cordial; likeable
Opposite Meaning: unfriendly

allay (verb) /əˈleɪ/
Definition: To reduce or alleviate something such as fear, anxiety, pain, or discomfort.
Example Sentence: "The kind words helped to allay his doubts."
Synonyms: appease; assuage; calm; diminish; ease; lessen
Opposite Meaning: aggravate

anatomy (noun) /əˈnatəmi/
Definition: The branch of biology that deals with the structure of living organisms and their parts.
Example Sentence: "Human anatomy is a complex subject that covers many different systems of the body."
Synonyms: biology; build; composition; configuration; constitution; construction
Opposite Meaning: inexactness

artificial (adjective) /ˌɑr təˈfɪʃ əl/
Definition: Made or produced by human beings, often as a replication or imitation of something found in nature.
Example Sentence: "Her smile seemed forced and artificial, betraying her true emotions."
Synonyms: counterfeit; ersatz; fabricated; fake; faux; imitation
Opposite Meaning: natural

bashful (adjective) /ˈbaʃf(ʊ)l/
Definition: Shy, reserved, or timid, often in social situations or when encountering unfamiliar people or attention.
Example Sentence: "The bashful artist was hesitant to show their work to others."
Synonyms: coy; demure; diffident; nervous; reserved; reticent
Opposite Meaning: outgoing

blithe (adjective) /blʌɪð/
Definition: Cheerful, lighthearted, and happy in a casual or carefree way, sometimes considered to be ignorant or improper.
Example Sentence: "She greeted each day with a blithe and cheerful attitude."
Synonyms: blasé; buoyant; carefree; cheerful; frolicsome; gleeful
Opposite Meaning: troubled

candor (noun) /ˈkæn dər/
Definition: The quality of being honest, sincere, and straightforward in one's dealings with others.
Example Sentence: "He spoke with candor about his difficult childhood."
Synonyms: bluntness; candidness; directness; forthrightness; frankness; genuineness
Opposite Meaning: deceit

certify (verb) /ˈsəːtɪfʌɪ/
Definition: To confirm or verify that something meets specific requirements, standards, or qualifications.
Example Sentence: "The government will certify the product as safe for consumption."
Synonyms: accredit; affirm; approve; assure; authenticate; endorse
Opposite Meaning: disprove

combat (verb) /kəmˈbæt/
Definition: To actively engage in a fight or conflict, typically with the aim of overcoming or defeating an adversary or a challenging situation.
Example Sentence: "The student sought professional help to combat anxiety and improve mental well-being."
Synonyms: battle; challenge; confront; counter; fight; oppose
Opposite Meaning: avoid

command (verb) /kəˈmænd/
Definition: To direct, order, or instruct someone to do something.
Example Sentence: "If you command with respect, people will follow."
Synonyms: captain; control; dictate; direct; govern; guide
Opposite Meaning: follow

compact (adjective) /kəmˈpækt/
Definition: Small in size or taking up minimal space.
Example Sentence: "The compact design of the new smartphone allowed for easy one-handed use."
Synonyms: bijou; compressed; concise; condensed; efficient; miniature
Opposite Meaning: bulky

cumulate (verb) /ˈkyu myəˌleɪt/
Definition: To gather, accumulate, or amass something gradually over time, resulting in a larger or more significant quantity or effect.
Example Sentence: "His reckless spending habits caused debts to cumulate, leading to financial trouble."
Synonyms: accrue; accumulate; aggregate; amass; collect; gather
Opposite Meaning: disperse

delirious (adjective) /dɪˈlɪrɪəs/
Definition: Intense excitement, confusion, or disorientation that is often associated with a physical or emotional disturbance.
Example Sentence: "The marathon runner crossed the finish line delirious with exhaustion."
Synonyms: bewildered; crazed; disoriented; distraught; disturbed; ecstatic
Opposite Meaning: clear-headed

deviation (noun) /ˌdi viˈeɪ ʃən/
Definition: The act or instance of departing from a standard, norm, expectation, or established course or pattern.
Example Sentence: "The experiment showed a significant deviation from the expected results."
Synonyms: aberration; anomaly; departure; difference; digression; discrepancy
Opposite Meaning: conformity

dispense (verb) /dɪˈspɛns/
Definition: To distribute, provide or administer something, often in a formal or regulated way.
Example Sentence: "The pharmacist will dispense your prescription medication."
Synonyms: allocate; allot; apportion; assign; deliver; disburse
Opposite Meaning: withhold

disperse (verb) /dɪˈspəːs/
Definition: To spread or scatter something widely and evenly in various directions.
Example Sentence: "The police used tear gas to disperse the crowd of protesters."
Synonyms: diffuse; disband; dislodge; disseminate; dissipate; dissolve
Opposite Meaning: gather

disruptive (adjective) /dɪsˈrʌp tɪv/
Definition: Causing disturbance, interruption, or significant change in a particular system, process, or environment.
Example Sentence: "The disruptive student constantly interrupted the class with their behavior."
Synonyms: disorderly; disturbing; innovative; revolutionary; transformative; tumultuous
Opposite Meaning: stabilizing

eerie (adjective) /ˈɪəri/
Definition: Strange and mysteriously unsettling in a way that invokes a sense of unease or fear.
Example Sentence: "The eerie silence of the deserted town was haunting."
Synonyms: creepy; fearful; frightening; ghostly; mysterious; scary
Opposite Meaning: normal

emerge (verb) /ɪˈmɜrdʒ/
Definition: To come forth, appear, or become visible after being hidden, concealed, or submerged.
Example Sentence: "Around dusk, nocturnal animals emerge from their hiding places to hunt."
Synonyms: appear; arise; break; develop; manifest; materialize
Opposite Meaning: vanish

evade (verb) /ɪˈveɪd/
Definition: To skillfully avoid or escape from something, often by using cunning or clever strategies.
Example Sentence: "She tried to evade his questions by changing the topic every time he got close to the truth."
Synonyms: avoid; bypass; circumvent; dodge; duck; elude
Opposite Meaning: confront

fade (verb) /feɪd/
Definition: To gradually diminish or disappear, typically in terms of color, brightness, or intensity.
Example Sentence: "The excitement of the event began to fade as the evening progressed."
Synonyms: decline; deteriorate; dim; dissolve; dwindle; ebb
Opposite Meaning: intensify

forward (adjective) /ˈfɔr wərd/
Definition: Indicating movement or progress towards a particular destination or goal.
Example Sentence: "She took a forward step, eager to embrace new challenges."
Synonyms: advanced; ahead; ambitious; assertive; dynamic; enterprising
Opposite Meaning: backward

frenzy (noun) /ˈfrɛn zi/
Definition: A state of intense and uncontrollable excitement, agitation, or chaotic activity.
Example Sentence: "The stock market experienced a buying frenzy as investors rushed to buy shares."
Synonyms: chaos; commotion; fever; hysteria; madness; mania
Opposite Meaning: calm

gallivant (verb) /ˈɡalɪvant/
Definition: To travel around aimlessly or without a clear purpose or destination.
Example Sentence: "He loves to gallivant around the city, exploring new neighborhoods."
Synonyms: amble; cruise; drift; meander; mooch; ramble
Opposite Meaning: stay

hinder (verb) /ˈhɪndə/
Definition: To create obstacles or difficulties that prevent someone or something from making progress or achieving a goal.
Example Sentence: "Limited access to education can hinder social and economic mobility."
Synonyms: block; constrain; encumber; hamper; handicap; impede
Opposite Meaning: aid

historical (adjective) /hɪˈstɔr ɪ kəl/
Definition: Relating to or connected with history.
Example Sentence: "The museum is home to a vast collection of historical artifacts."
Synonyms: ancient; antique; archaic; bygone; epochal; heritage
Opposite Meaning: current

hostile (adjective) /ˈhɒstʌɪl/
Definition: Unfriendly, antagonistic, or marked by opposition and aggression.
Example Sentence: "The hostile crowd jeered and booed as the opposing team took the field."
Synonyms: adversarial; adverse; aggressive; antagonistic; bellicose; belligerent
Opposite Meaning: friendly

idle (adjective) /ˈaɪd l/
Definition: Inactivity, laziness, or lack of engagement.
Example Sentence: "The machine stood idle, collecting dust in the corner of the workshop."
Synonyms: dormant; inactive; languid; lazy; motionless; sluggish
Opposite Meaning: busy

imitate (verb) /ˈɪm ɪˌteɪt/
Definition: To copy, mimick, or reproduce the actions, behavior, or characteristics of someone or something else.
Example Sentence: "The child tried to imitate the sound of a bird chirping."
Synonyms: ape; copy; echo; emulate; follow; impersonate
Opposite Meaning: originate

impede (verb) /ɪmˈpiːd/
Definition: To obstruct, hinder, or slow down the progress or movement of someone or something.
Example Sentence: "His lack of confidence might impede his chances of winning."
Synonyms: block; curb; disrupt; encumber; hamper; handicap
Opposite Meaning: facilitate

impediment (noun) /ɪmˈpɛdɪm(ə)nt/
Definition: Something that obstructs or hinders progress or achievement.
Example Sentence: "The lack of resources was an impediment to the charity's ability to help those in need."
Synonyms: barrier; deterrent; difficulty; drawback; encumbrance; handicap
Opposite Meaning: aid

incoherent (adjective) /ˌɪnkə(ʊ)ˈhɪərənt/
Definition: Lacking logical order, consistency, or clarity, making it difficult to understand or follow.
Example Sentence: "The instructions were incoherent and caused confusion among the students."
Synonyms: befuddled; chaotic; confused; disconnected; disjointed; disordered
Opposite Meaning: articulate

intact (adjective) /ɪnˈtakt/
Definition: Remaining complete, whole, or undamaged, without any significant alterations or losses.
Example Sentence: "Despite the earthquake, most of the old town remained intact."
Synonyms: sound; together; unbroken; unharmed; unhurt; unimpaired
Opposite Meaning: damaged

integral (adjective) /ˈɪntɪɡr(ə)l/
Definition: Necessary or essential to the completion or functioning of a whole.
Example Sentence: "His role in the team was integral to its success."
Synonyms: basic; constituent; constitutive; core; crucial; essential
Opposite Meaning: unimportant

intervene (verb) /ˌɪn tərˈvin/
Definition: To come between or involve oneself in a situation or conflict in order to influence its outcome or provide assistance.
Example Sentence: "The therapist decided to intervene in the couple's escalating argument."
Synonyms: arbitrate; intercede; interfere; interject; interpose; interrupt
Opposite Meaning: ignore

inventory (noun) /ˈɪnv(ə)nt(ə)ri/
Definition: A list or a record of items or goods that are in stock, including details such as quantity, condition, and location.
Example Sentence: "The inventory of tools in the shed was organized by category."
Synonyms: account; catalogue; directory; index; listing; log
Opposite Meaning: disarray

isolate (verb) /ˈʌɪsəleɪt/
Definition: To set apart, separate, or detach something or someone from its surroundings, context, or companions.
Example Sentence: "The prisoners were put in solitary confinement to isolate them from other inmates."
Synonyms: confine; detach; disconnect; disunite; divorce; insulate
Opposite Meaning: integrate

itinerary (noun) /ʌɪˈtɪnərəri/
Definition: A plan or schedule of a journey, including the route, destinations, and stops.
Example Sentence: "The itinerary for the trip included stops at several historical sites."
Synonyms: diary; guide; guidebook; journey; outline; program
Opposite Meaning: randomness

jargon (noun) /ˈdʒɑr gən/
Definition: Specialized or technical language that is specific to a particular profession, industry, or field of study.
Example Sentence: "The programmers used coding jargon to discuss the intricacies of their software."
Synonyms: argot; dialect; idiom; jive; language; lingo
Opposite Meaning: clarity

leading (adjective) /ˈli dɪŋ/
Definition: In a position of prominence, superiority, or influence within a particular context or field.
Example Sentence: "He is a leading expert in the field of neuroscience."
Synonyms: chief; dominant; eminent; foremost; influential; main
Opposite Meaning: trailing

literally (adverb) /ˈlɪt(ə)rəli/
Definition: True or accurate in a strict, factual sense, without exaggeration, metaphor, or figurative language.
Example Sentence: "She was literally shaking with excitement."
Synonyms: accurately; actually; directly; exactly; faithfully; positively
Opposite Meaning: figuratively

magnitude (noun) /ˈmaɡnɪtʃuːd/
Definition: The size, extent, or scale of something, particularly in terms of its measurable dimensions or the degree of its importance or significance.
Example Sentence: "The magnitude of the universe is beyond comprehension."
Synonyms: amplitude; dimension; extent; importance; intensity; scale
Opposite Meaning: insignificance

mediocre (adjective) /ˌmiːdɪˈəʊkə/
Definition: Average or of moderate quality, neither very good nor very bad.
Example Sentence: "The concert was mediocre and not worth the price of the ticket."
Synonyms: adequate; middling; ordinary; passable; satisfactory; standard
Opposite Meaning: exceptional

method (noun) /ˈmɛθ əd/
Definition: A systematic, structured, or organized approach or procedure used to achieve a particular goal, solve a problem, or carry out a task.
Example Sentence: "The author followed a strict method of outlining before starting the writing process."
Synonyms: approach; fashion; manner; means; mode; procedure
Opposite Meaning: disorder

metric (adjective) /ˈmɛ trɪk/
Definition: Relating to a system of measurement or quantification that is based on specific standards or units.
Example Sentence: "The performance metrics indicated a significant improvement in productivity."
Synonyms: ascertainable; calculable; countable; determinable; gaugeable; gradable
Opposite Meaning: immeasurable

orthodox (adjective) /ˈɔːθədɒks/
Definition: Following or conforming to traditional beliefs or established customs and practices.
Example Sentence: "She comes from an orthodox family that strictly follows cultural customs."
Synonyms: accepted; classic; common; conventional; mainstream; normal
Opposite Meaning: unconventional

palpable (adjective) /ˈpalpəb(ə)l/
Definition: Easily perceivable, tangible, or capable of being felt or touched.
Example Sentence: "The tension in the air was palpable before the final exam."
Synonyms: apparent; clear; conspicuous; detectable; discernible; evident
Opposite Meaning: intangible

peril (noun) /ˈpɛrəl/
Definition: A situation or condition that is characterized by danger, risk, or potential harm.
Example Sentence: "The ship was in peril when it encountered a violent storm at sea."
Synonyms: crisis; emergency; hazard; jeopardy; precariousness; threat
Opposite Meaning: safety

pivotal (adjective) /ˈpɪvətl/
Definition: Critically important or essential to the success or outcome of a particular situation, event, or process.
Example Sentence: "Her role in the company was pivotal to its growth and success."
Synonyms: central; critical; crucial; decisive; essential; fundamental
Opposite Meaning: insignificant

plight (noun) /plʌɪt/
Definition: A difficult or challenging situation or condition, typically one that involves adversity, suffering, or distress.
Example Sentence: "The organization was established to address the plight of children living in poverty."
Synonyms: dilemma; frustration; impasse; perplexity; predicament; quandary
Opposite Meaning: comfort

potential (noun) /pəˈtɛnʃl/
Definition: The latent qualities, abilities, or aptitudes that an individual or entity possesses, which, if developed or harnessed, may lead to future success.
Example Sentence: "The company is looking for employees with leadership potential."
Synonyms: capability; capacity; competence; likelihood; possibilities; promise
Opposite Meaning: incapability

prodigious (adjective) /prəˈdɪdʒəs/
Definition: Extraordinarily impressive, exceptional, or remarkable in size, extent, skill, or quality.
Example Sentence: "He wrote a prodigious number of hit records throughout his career."
Synonyms: astonishing; colossal; enormous; exceptional; extraordinary; immense
Opposite Meaning: small

reconcile (verb) /ˈrɛk(ə)nsʌɪl/
Definition: To restore friendly or harmonious relations between people or groups.
Example Sentence: "They attended relationship-theorpy in an attempt to reconcile their differences."
Synonyms: accommodate; appease; assuage; conform; harmonize; pacify
Opposite Meaning: estrange

regarding (preposition) /rɪˈgɑr dɪŋ/
Definition: Indicating the subject or topic that is being discussed, considered, or referred to.
Example Sentence: "I have a question regarding the upcoming meeting."
Synonyms: about; apropos; concerning; over; pertaining; relative
Opposite Meaning: excluding

reign (noun) /reɪn/
Definition: A period of time during which a monarch, ruler, or sovereign holds power and exercises authority over a country or territory.
Example Sentence: "Queen Elizabeth II has had the longest reign in British history."
Synonyms: authority; command; control; dominion; governance; kingship
Opposite Meaning: serve

robust (adjective) /roʊˈbʌst/
Definition: Strong, sturdy, and capable of withstanding challenges, pressures, or adverse conditions.
Example Sentence: "The robust immune system fought off the virus within days."
Synonyms: brawny; burly; durable; hale; hardy; hearty
Opposite Meaning: frail

savvy (adjective) /ˈsavi/
Definition: Having or showing shrewd judgement and understanding, especially in practical matters.
Example Sentence: "He is a savvy investor, always looking for new opportunities to grow his portfolio."
Synonyms: acute; astute; canny; perceptive; perspicacious; sagacious
Opposite Meaning: naive

shun (verb) /ʃraʊd/
Definition: To deliberately avoid, ignore, or keep away from someone or something, often due to a strong aversion, disapproval, or a desire to distance oneself.
Example Sentence: "Some communities shun outsiders to protect their unique way of life."
Synonyms: abstain; disdain; elude; eschew; evade; ignore
Opposite Meaning: seek

squander (verb) /ˈskwɒndə/
Definition: To waste something, usually a valuable resource, in a careless or reckless manner.
Example Sentence: "He tends to squander his time on unproductive activities."
Synonyms: blow; deplete; dissipate; exhaust; expend; fritter
Opposite Meaning: conserve

succumb (verb) /səˈkʌm/
Definition: To yield or give in to a force, pressure, temptation, illness, or adverse circumstance.
Example Sentence: "Even the strongest may succumb to temptation."
Synonyms: accede; acquiesce; bow; capitulate; cave; collapse
Opposite Meaning: resist

tension (noun) /ˈtɛnʃn/
Definition: A feeling of mental or emotional strain or stress, often characterized by a sense of unease or discomfort.
Example Sentence: "The high-stress job created tension between the employees and their bosses."
Synonyms: anxiety; apprehension; concern; edginess; nervousness; pressure
Opposite Meaning: relaxation

vibe (noun) /vaɪb/
Definition: The atmosphere, energy, or overall feeling that is present in a particular place, situation, or individual.
Example Sentence: "The beach had a serene and tranquil vibe, perfect for relaxation."
Synonyms: ambiance; atmosphere; aura; character; energy; essence
Opposite Meaning: discord

vitality (noun) /vʌɪˈtalɪti/
Definition: A strong sense of liveliness, robust physical and mental health, and an enduring enthusiasm for life's challenges and joys.
Example Sentence: "He was an exuberant young man, bursting with health and vitality."
Synonyms: energy; exuberance; liveliness; passion; spirit; verve
Opposite Meaning: lethargy

vivid (adjective) /ˈvɪvɪd/
Definition: Exceptionally clear, bright, and intense in its appearance or presentation.
Example Sentence: "The woman gave the police a vivid description of the intruder."
Synonyms: clear; colorful; descriptive; detailed; emotive; evocative
Opposite Meaning: dull

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