Online English Vocabulary Flashcards for High School 13 Words

accordance (noun) /əˈkɔr dns/
Definition: A state or condition of agreement, conformity, or harmony between two or more things.
Example Sentence: "The new regulations were implemented in accordance with government guidelines."
Synonyms: agreement; alignment; compliance; concordance; concurrence; conformity
Opposite Meaning: conflict

accustom (verb) /əˈkʌs təm/
Definition: To become familiar with and adapt to a particular situation, environment, or habit through repeated exposure and practice.
Example Sentence: "The students need time to accustom to the new school routine and expectations."
Synonyms: acclimate; adapt; adjust; assimilate; condition; conform
Opposite Meaning: alienate

acquisitive (adjective) /əˈkwɪz ɪ tɪv/
Definition: Having a strong inclination or desire to acquire or possess things, often material possessions or wealth.
Example Sentence: "His acquisitive nature led him to amass a vast collection of antique cars."
Synonyms: accumulative; avaricious; covetous; desirous; grasping; greedy
Opposite Meaning: generous

aeronautical (adjective) /ˌɛər əˈnɔ tɪ kəl/
Definition: Pertainining to or relating to the study, design, development, or operation of aircraft and other flying objects.
Example Sentence: "He joined an aeronautical research organization to contribute to aerospace innovation."
Synonyms: aerial; aerospace; airborne; aircraft; airworthy; avionic
Opposite Meaning: ground-based

agnosticism (noun) /ægˈnɒs təˌsɪz əm/
Definition: A philosophical or theological standpoint characterized by the belief that the existence or nature of a higher power or ultimate truth is unknown, unknowable, or inherently beyond human comprehension.
Example Sentence: "Agnosticism fosters an open-minded and skeptical approach to matters of faith and belief."
Synonyms: ambivalence; doubt; hesitancy; hesitation; incredulity; indecision
Opposite Meaning: certainty

allude (verb) /əˈl(j)uːd/
Definition: To make an indirect reference or suggestion to something without stating it directly.
Example Sentence: "The song's lyrics allude to a failed relationship."
Synonyms: hint; imply; indicate; infer; insinuate; intimate
Opposite Meaning: ignore

ambiance (noun) /ˈæm bi əns/
Definition: The overall atmosphere, mood, or character of a place, environment, or situation.
Example Sentence: "The soft music and dim lighting created a romantic ambiance in the restaurant."
Synonyms: atmosphere; aura; character; climate; environment; feel
Opposite Meaning: blandness

ambisexual (adjective) /ˌæm bɪˈsɛk ʃu əl/
Definition: Sexually attracted to individuals of both male and female genders, or to people regardless of their gender identity or expression.
Example Sentence: "The fashion line challenges traditional gender norms with its ambisexual designs."
Synonyms: androgynous; bisexual; fluid; genderfluid; genderqueer; nonbinary
Opposite Meaning: heterosexual

annihilation (noun) /əˌnaɪ əˈleɪ ʃən/
Definition: The act or process of completely destroying or eradicating something, often to the point of complete extinction or obliteration.
Example Sentence: "The sci-fi novel depicted a post-apocalyptic world on the brink of annihilation."
Synonyms: decimation; destruction; devastation; elimination; eradication; extermination
Opposite Meaning: creation

appalled (adjective) /əˈpɔld/
Definition: Shock, horror, or disgust towards something that is morally offensive, morally wrong, or deeply disturbing.
Example Sentence: "She was appalled by the graphic violence depicted in the movie."
Synonyms: aghast; astounded; disgusted; dismayed; horrified; mortified
Opposite Meaning: pleased

argumentative (adjective) /ˌɑr gyəˈmɛn tə tɪv/
Definition: Tending to engage in arguments or disputes easily, often exhibiting a strong inclination or propensity for disagreement or debate.
Example Sentence: "His argumentative nature often led to heated debates with his colleagues."
Synonyms: belligerent; combative; confrontational; contentious; contrary; controversial
Opposite Meaning: agreeable

ballistic (adjective) /bəˈlɪstɪk/
Definition: Relating to the science or technology of projectiles, such as bullets, missiles, or rockets.
Example Sentence: "The rocket's ballistic course was carefully calculated for accuracy."
Synonyms: apoplectic; enraged; fuming; furious; incensed; indignant
Opposite Meaning: stationary

bizarre (adjective) /bɪˈzɑr/
Definition: Extremely unusual, strange, or unconventional in a way that deviates from normal or expected behavior, appearance, or circumstances.
Example Sentence: "The movie had a bizarre plot twist that left the audience perplexed."
Synonyms: abnormal; eccentric; extraordinary; odd; outlandish; peculiar
Opposite Meaning: normal

brag (verb) /bræg/
Definition: To excessively boast or express excessive pride about one's accomplishments, possessions, abilities, or qualities.
Example Sentence: "He always brags about his expensive car and luxurious vacations."
Synonyms: boast; crow; exaggerate; flaunt; gloat; parade
Opposite Meaning: humble

catch (verb) /kætʃ/
Definition: To intercept or seize something in motion or flight, typically with the hands or a physical object.
Example Sentence: "She hopes to catch the train before it departs."
Synonyms: acquire; apprehend; capture; comprehend; detect; ensnare
Opposite Meaning: miss

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.
Example Sentence: "The engine relies on combustion to generate power and propel the vehicle."
Synonyms: burning; conflagration; enflaming; fire; flame; flaring
Opposite Meaning: extinguishment

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

commercial (adjective) /kəˈmɜr ʃəl/
Definition: Pertaining to commerce, trade, or business activities conducted for financial gain.
Example Sentence: "The television network aired a commercial break during the popular TV show."
Synonyms: business; corporate; economic; financial; industrial; market
Opposite Meaning: non-commercial

commute (noun) /kəˈmjuːt/
Definition: The act of regularly traveling back and forth between one's place of residence and one's place of work or study.
Example Sentence: "He had a long commute to work every day, taking over an hour by train."
Synonyms: cycle; drive; journey; navigate; ride; shuttle
Opposite Meaning: stay

companion (noun) /kəmˈpæn yən/
Definition: A person or an animal with whom one spends time and shares experiences, often providing friendship, support, and companionship.
Example Sentence: "She considers her sister to be her closest companion and confidante."
Synonyms: ally; associate; buddy; chum; cohort; comrade
Opposite Meaning: stranger

compatible (adjective) /kəmˈpæt ə bəl/
Definition: Having the ability of two or more things to exist or function together harmoniously, without conflict or contradiction.
Example Sentence: "These two artists have a compatible artistic vision, which is why they often collaborate on projects."
Synonyms: adaptable; agreeable; aligned; amicable; coherent; complementary
Opposite Meaning: incompatible

contaminate (verb) /kənˈtæm əˌneɪt/
Definition: To pollute, taint, or infect something with harmful or undesirable substances or elements.
Example Sentence: "The oil spill threatened to contaminate the coastal waters and endanger marine life."
Synonyms: adulterate; corrupt; debase; defile; foul; impure
Opposite Meaning: purify

contributory (adjective) /kənˈtrɪb yəˌtɔr i/
Definition: Playing a role in adding to or assisting in a particular outcome or result.
Example Sentence: "The committee identified several contributory factors that led to the decline in sales."
Synonyms: aiding; assisting; collaborative; cooperative; helpful; influential
Opposite Meaning: unrelated

cooperate (verb) /koʊˈɒp əˌreɪt/
Definition: To work together or collaborate with others in order to achieve a common goal or objective.
Example Sentence: "The countries agreed to cooperate on environmental conservation efforts."
Synonyms: assist; collaborate; combine; coordinate; help; join
Opposite Meaning: conflict

crooked (adjective) /ˈkrʊk ɪd/
Definition: Physically bent, curved, or not straight.
Example Sentence: "The detective suspected the businessman was involved in crooked dealings."
Synonyms: askew; bent; contorted; curved; deformed; inclined
Opposite Meaning: straight

delegation (noun) /dɛlɪˈɡeɪʃ(ə)n/
Definition: The act of assigning or entrusting responsibility or authority to a group of individuals or representatives.
Example Sentence: "The delegation was made up of experts in the field."
Synonyms: commission; contingent; crew; deputation; envoys; legation
Opposite Meaning: retention

depose (verb) /dɪˈpəʊz/
Definition: To remove from a position of power or authority, usually through legal or political means.
Example Sentence: "The rebels plan to depose the king and establish a republic."
Synonyms: demote; dethrone; discharge; dismiss; displace; eject
Opposite Meaning: appoint

dimension (noun) /daɪmenʃən/
Definition: A measurable aspect or parameter that helps define the size, extent, or scope of an object, space, or concept.
Example Sentence: "The new technology opened up a whole new dimension of possibilities."
Synonyms: amplitude; breadth; depth; extent; magnitude; measurement
Opposite Meaning: insignificance

distraction (noun) /dɪstrækʃən/
Definition: A state or condition in which one's attention is diverted or disrupted from a particular task, objective, or focus of interest.
Example Sentence: "The barking dog next door was a major distraction while trying to work from home."
Synonyms: commotion; derangement; disarray; disruption; disturbance; diversion
Opposite Meaning: focus

dreary (adjective) /ˈdrɪəri/
Definition: Dull, gloomy, and lacking in brightness or cheerfulness, often in a way that evokes a feeling of monotony or sadness.
Example Sentence: "The music had a dreary tone that gave me a feeling of sadness."
Synonyms: bleak; boring; dismal; drab; forlorn; glum
Opposite Meaning: cheerful

en-masse (adverb) /ɒ̃ ˈmas/
Definition: Occurring with a large group of people or things collectively, simultaneously, or all together.
Example Sentence: "The refugees fled en masse to escape the war."
Synonyms: bulked; collectively; communally; comprehensively; concert; grouped
Opposite Meaning: individually

extrinsic (adjective) /ɛksˈtrɪnsɪk/
Definition: External or outside of a particular object, system, or situation.
Example Sentence: "The extrinsic factors, such as weather conditions, affected the outcome of the race."
Synonyms: adventitious; ancillary; circumstantial; external; extraneous; incidental
Opposite Meaning: intrinsic

foolish (adjective) /ˈfu lɪʃ/
Definition: Lacking good judgment, wisdom, or prudence.
Example Sentence: "It was a foolish decision to quit your job without having another one lined up."
Synonyms: absurd; daft; foolhardy; impractical; imprudent; irrational
Opposite Meaning: sensible

gaping (adjective) /ˈɡeɪpɪŋ/
Definition: Wide open or exposed, usually in a way that is unexpected or surprising.
Example Sentence: "The wound on his arm was gaping and required immediate medical attention."
Synonyms: ajar; broad; cavernous; chasmal; exposed; revealed
Opposite Meaning: closed

garland (noun) /ˈɡɑːlənd/
Definition: A decorative arrangement made of flowers, leaves, or other materials that are woven or strung together to form a loop or a hanging ornament.
Example Sentence: "The Christmas tree was adorned with a garland of gold tinsel."
Synonyms: chaplet; circlet; compilation; coronet; crown; diadem
Opposite Meaning: disarray

globule (noun) /ˈglɒb yul/
Definition: A small, round, or spherical liquid or solid particle that is typically suspended or contained within a larger substance or medium.
Example Sentence: "The globules of mercury rolled off the table, scattering in all directions."
Synonyms: ball; bead; blob; bubble; dewdrop; dot
Opposite Meaning: mass

hail (verb) /heɪl/
Definition: To greet or salute someone enthusiastically or in a formal manner.
Example Sentence: "If you need a taxi, just hail one from the street corner."
Synonyms: acclaim; acknowledge; applaud; attract; beckon; call
Opposite Meaning: ignore

hoist (verb) /hɔɪst/
Definition: To lift or raise something, typically using a mechanical device or physical effort.
Example Sentence: "We'll need to hoist the sail if we want to catch the wind."
Synonyms: boost; elevate; heave; lift; raise; upend
Opposite Meaning: lower

illustrate (verb) /ˈɪl əˌstreɪt/
Definition: To provide visual or verbal representation, clarification, or explanation of a concept, idea, or information.
Example Sentence: "The presentation was enhanced with visuals to illustrate the key points."
Synonyms: clarify; demonstrate; depict; display; elucidate; enlighten
Opposite Meaning: confuse

indispensable (adjective) /ˌɪndɪˈspɛnsəbl/
Definition: Essential or vital for something to function or be successful.
Example Sentence: "Honesty is an indispensable quality for building trust in relationships."
Synonyms: critical; crucial; fundamental; imperative; integral; key
Opposite Meaning: unnecessary

inviolable (adjective) /ɪnˈvaɪ ə lə bəl/
Definition: Absolutely sacred, secure, or untouchable, and cannot be violated, compromised, or infringed upon under any circumstances.
Example Sentence: "The embassy grounds are considered inviolable under international law."
Synonyms: hallowed; impregnable; invulnerable; protected; sacrosanct; sanctified
Opposite Meaning: violable

irregularity (noun) /ɪˌrɛg yəˈlær ɪ ti/
Definition: The state or quality of deviating from the usual or expected pattern, form, or behavior.
Example Sentence: "The inspector found several irregularities in the financial records."
Synonyms: aberration; anomaly; defect; deviation; discrepancy; flaw
Opposite Meaning: conformity

latterly (adverb) /ˈlæt ər li/
Definition: Recently, or closer to the present time compared to a previously mentioned time.
Example Sentence: "He has become more health-conscious latterly, adopting a nutritious diet and exercise routine."
Synonyms: anew; freshly; lastly; lately; latter; newly
Opposite Meaning: formerly

lull (noun) /lʌl/
Definition: A temporary period of calm, quiet, or reduced activity, often following a period of heightened activity or disturbance.
Example Sentence: "The lull in the storm allowed the rescue team to reach the stranded hikers."
Synonyms: break; breather; cessation; interim; interlude; intermission
Opposite Meaning: surge

macerate (verb) /ˈmæs əˌreɪt/
Definition: To soak a substance in liquid, causing it to become soft and break down.
Example Sentence: "The chef instructed us to macerate the berries to bring out their flavor."
Synonyms: soften; steep; infuse; soak; saturate; drench
Opposite Meaning: dehydrate

milky (adjective) /ˈmɪl ki/
Definition: Resembling or is related to milk in color, appearance, or texture.
Example Sentence: "The milky fog covered the landscape, creating an ethereal atmosphere."
Synonyms: alabaster; chalky; creamy; ivory; lacteous; lactescent
Opposite Meaning: clear

modesty (noun) /ˈmɒd ə sti/
Definition: The quality or state of having a humble and unassuming attitude towards one's achievements, abilities, or appearance.
Example Sentence: "She accepted the award with modesty, expressing gratitude to her team for their support."
Synonyms: decency; discretion; humbleness; humility; meekness; propriety
Opposite Meaning: arrogance

natatorial (adjective) /ˌneɪ təˈtɔr i əl/
Definition: Relating to swimming or being adapted for swimming.
Example Sentence: "The natatorial seal effortlessly dived into the ocean depths."
Synonyms: amphibious; aquatic; fluvial; hydrodynamic; lacustrine; marine
Opposite Meaning: terrestrial

newfangled (adjective) /ˈnuˈfæŋ gəld/
Definition: Recent or modern, particularly in terms of design, technology, or ideas, and often implies a sense of novelty or innovation.
Example Sentence: "She was unimpressed by the newfangled smartphone, preferring the simplicity of her old flip phone."
Synonyms: avant-garde; contemporary; fresh; groundbreaking; innovative; modern
Opposite Meaning: traditional

niggling (adjective) /ˈnɪg lɪŋ/
Definition: Trivial, petty, or bothersome, often in a way that is slightly irritating or nagging.
Example Sentence: "He had a niggling feeling that something was not right."
Synonyms: bothersome; finicky; fussing; grumbling; irritating; nitpicking
Opposite Meaning: significant

nipper (noun) /ˈnɪp ər/
Definition: A child or a young person, especially one who is active or mischievous.
Example Sentence: "The park was filled with little nippers running around and playing."
Synonyms: babe; child; kid; munchkin; tike; toddler
Opposite Meaning: adult

objective (noun) /əbˈdʒɛk tɪv/
Definition: A specific goal, aim, or purpose that one seeks to achieve or accomplish.
Example Sentence: "The teacher outlined the learning objectives for the semester."
Synonyms: aim; ambition; aspiration; destination; end; goal
Opposite Meaning: subjectivity

objector (noun) /əbˈʤɛktə/
Definition: An individual who expresses opposition or dissent towards a specific idea, action, or policy.
Example Sentence: "The conscientious objector sought alternative service options that aligned with their moral principles."
Synonyms: challenger; critic; denouncer; dissenter; dissident; gainsayer
Opposite Meaning: supporter

peremptory (adjective) /pəˈrɛm(p)t(ə)ri/
Definition: Delivered in an authoritative and final manner, leaving no room for debate or negotiation.
Example Sentence: "The manager's peremptory tone made it clear that the discussion was over."
Synonyms: assertive; autocratic; commanding; decisive; dictatorial; dogmatic
Opposite Meaning: compliant

persist (verb) /pərˈsɪst/
Definition: To continue firmly or steadfastly in a particular course of action, belief, or attitude, despite challenges, obstacles, or opposition.
Example Sentence: "Despite the obstacles, she continued to persist with her studies."
Synonyms: continue; endure; hold; keep; last; persevere
Opposite Meaning: cease

poltergeist (noun) /ˈpoʊl tərˌgaɪst/
Definition: A supernatural entity or spirit characterized by its mischievous and disruptive behavior.
Example Sentence: "The poltergeist's antics included knocking over furniture and slamming doors in the middle of the night."
Synonyms: apparition; entity; ghost; haunt; phantom; presence
Opposite Meaning: calm

profusely (adverb) /prəˈfjuːsli/
Definition: In an abundant or excessive manner.
Example Sentence: "He apologized profusely for his mistake."
Synonyms: abundantly; amply; copiously; lavishly; liberally; plentifully
Opposite Meaning: sparingly

prominent (adjective) /ˈprɒmɪnənt/
Definition: Easily noticeable, conspicuous, or widely recognized due to its distinctiveness, importance, or visibility.
Example Sentence: "She was a prominent writer, with many bestselling books and articles to her credit."
Synonyms: distinguished; esteemed; famed; famous; influential; leading
Opposite Meaning: obscure

promote (verb) /prəˈmoʊt/
Definition: To advance, support, or encourage the growth, development, or success of someone or something.
Example Sentence: "The company launched a new marketing campaign to promote its latest product."
Synonyms: advance; advertise; advocate; boost; champion; elevate
Opposite Meaning: demote

revolve (verb) /rɪˈvɒlv/
Definition: To move in a circular or orbital path around a central point or axis.
Example Sentence: "His life seems to revolve around his work, leaving little time for personal pursuits."
Synonyms: circle; gyrate; loop; orbit; oscillate; pivot
Opposite Meaning: stay

seething (adjective) /ˈsiːðɪŋ/
Definition: Intense agitation or anger, typically characterized by strong and barely controllable emotions.
Example Sentence: "She was seething with resentment towards her ex-partner."
Synonyms: boiling; fuming; incensed; infuriated; intense; livid
Opposite Meaning: calm

slanted (adjective) /ˈslɑːntɪd/
Definition: Inclined or tilted to one side.
Example Sentence: "She wore a slanted hat that added a touch of mystery to her outfit."
Synonyms: angled; askew; canted; diagonal; inclined; leaning
Opposite Meaning: unbiased

somnolent (adjective) /ˈsɑmnələnt/
Definition: Drowsiness, sleepiness, or a general feeling of lethargy and tiredness.
Example Sentence: "The somnolent atmosphere in the room was perfect for an afternoon nap."
Synonyms: dozy; dull; hypnotic; lethargic; narcotic; sedative
Opposite Meaning: alert

spectral (adjective) /ˈspɛk trəl/
Definition: Relating to or resembling a specter or ghost.
Example Sentence: "The spectral whispers echoed through the empty hallways of the ancient castle."
Synonyms: apparitional; eerie; eldritch; ethereal; ghostly; otherworldly
Opposite Meaning: corporeal

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

statuesque (adjective) /ˌstæʧuˈɛsk/
Definition: Tall and graceful in physical appearance, reminiscent of a statue and typically of a woman.
Example Sentence: "The model's statuesque beauty was the highlight of the fashion show."
Synonyms: dignified; elegant; grand; imposing; impressive; majestic
Opposite Meaning: short

stultify (verb) /ˈstʌltɪfʌɪ/
Definition: To cause someone or something to become ineffective, pointless, or absurd by hindering their potential or rendering them ineffectual.
Example Sentence: "Overprotective parenting can stultify a child's independence."
Synonyms: baffle; bewilder; confound; confuse; flummox; frustrate
Opposite Meaning: stimulate

synthetic (adjective) /sɪnˈθɛt ɪk/
Definition: Artificially created, produced, or manufactured rather than occurring naturally.
Example Sentence: "The company introduced a line of synthetic leather handbags as an animal-friendly alternative."
Synonyms: artificial; ersatz; fabricated; faux; imitation; manufactured
Opposite Meaning: natural

teasing (noun) /ˈti zɪŋ/
Definition: The act of playfully or mockingly provoking or taunting someone, often with the intention of causing mild amusement or annoyance.
Example Sentence: "The teasing between the two coworkers lightened the atmosphere in the office."
Synonyms: banter; chaffing; derision; jest; jesting; jibing
Opposite Meaning: serious

tendentious (adjective) /tɛnˈdɛnʃəs/
Definition: Exhibiting a clear and biased perspective, often with the intention of promoting a particular agenda or ideology.
Example Sentence: "The speaker's tendentious remarks revealed their political biases."
Synonyms: biased; disposed; manipulative; opinionated; partial; partisan
Opposite Meaning: impartial

tendril (noun) /ˈtɛndr(ɪ)l/
Definition: A thin, flexible stem or shoot that plants use for support and attachment.
Example Sentence: "The tendril curled around the fence post for support."
Synonyms: bine; branchlet; flagellum; offshoot; runner; shoot
Opposite Meaning: root

tensile (adjective) /ˈtɛnsʌɪl/
Definition: Having the ability to resist breaking or being stretched apart when a force is applied to a material.
Example Sentence: "The bridge was designed to withstand high tensile forces."
Synonyms: ductile; elastic; flexible; malleable; pliable; stretchy
Opposite Meaning: inflexible

tinged (adjective) /tɪndʒd/
Definition: Having a slight, subtle, or delicate shade or color of a particular hue.
Example Sentence: "His remarks were tinged with sarcasm, indicating a hint of mockery."
Synonyms: colored; dipped; dyed; flushed; highlighted; imbued
Opposite Meaning: uncolored

unaccountable (adjective) /ˌʌn əˈkaʊn tə bəl/
Definition: Cannot be explained, justified, or held responsible for their actions or decisions.
Example Sentence: "The unaccountable use of public funds raised concerns about corruption."
Synonyms: arbitrary; capricious; erratic; imponderable; inexplicable; inscrutable
Opposite Meaning: responsible

venerate (verb) /ˈvɛnəreɪt/
Definition: To show deep respect, admiration, or reverence towards someone or something.
Example Sentence: "In Japan, people venerate their ancestors during the Obon festival."
Synonyms: adore; cherish; deify; esteem; exalt; honor
Opposite Meaning: disrespect