Online English Vocabulary Flashcards for High School 14 Words

ablution (noun) /əˈbluːʃn/
Definition: The act of cleansing or washing oneself, particularly as part of a ritual, religious practice, or daily hygiene routine.
Example Sentence: "The campground offered ablution facilities for travelers to freshen up."
Synonyms: bath; cleanse; lavation; purify; scrub; shower
Opposite Meaning: soiling

adaptable (adjective) /əˈdæp tə bəl/
Definition: Being able to adjust or change according to different circumstances or situations.
Example Sentence: "Mark's adaptable nature enables him to quickly adjust his plans when unexpected changes occur."
Synonyms: accommodating; adjustable; changeable; flexible; malleable; modifiable
Opposite Meaning: rigid

alongside (adverb) /əˈlɔŋˈsaɪd/
Definition: Indicating a position or state of being next to or alongside something or someone.
Example Sentence: "The new building stands proudly alongside the old historical structure."
Synonyms: abreast; adjacent; beside; close; nearby; neighboring
Opposite Meaning: apart

anomalous (adjective) /əˈnɒm ə ləs/
Definition: Deviating from what is considered normal, typical, or expected.
Example Sentence: "The stock market experienced an anomalous surge in prices, baffling investors."
Synonyms: abnormal; atypical; deviant; divergent; exceptional; irregular
Opposite Meaning: normal

armament (noun) /ˈɑr mə mənt/
Definition: The weapons, equipment, or military hardware used for warfare or defense purposes.
Example Sentence: "The country invested heavily in its naval armament to enhance its maritime capabilities."
Synonyms: arsenal; artillery; defenses; equipment; firearms; guns
Opposite Meaning: disarmament

artifact (noun) /ˈɑr təˌfækt/
Definition: An object made or modified by human hands, typically with historical, cultural, or archaeological significance.
Example Sentence: "The museum displayed a collection of ancient artifacts from various civilizations."
Synonyms: antiquity; curio; fossil; item; object; piece
Opposite Meaning: natural object

backing (noun) /ˈbæk ɪŋ/
Definition: Support, assistance, or endorsement given to a person, cause, project, or endeavor.
Example Sentence: "The project received strong financial backing from multiple investors."
Synonyms: aid; approval; assistance; backup; collaboration; encouragement
Opposite Meaning: opposition

beside (preposition) /bɪˈsaɪd/
Definition: Indicating the position of one object or person in close proximity or alongside another.
Example Sentence: "The cat curled up beside the fireplace to keep warm."
Synonyms: abutting; adjacent; alongside; bordering; near; neighboring
Opposite Meaning: apart

cataclysmic (adjective) /ˌkatəˈklɪzmɪk/
Definition: Extremely destructive, violent, or disruptive.
Example Sentence: "The asteroid impact was cataclysmic, causing massive extinction of species."
Synonyms: apocalyptic; calamitous; catastrophic; damaging; devastating; disastrous
Opposite Meaning: mild

commemorate (verb) /kəˈmɛm əˌreɪt/
Definition: O honor, remember, or celebrate an important event, person, or occasion.
Example Sentence: "The memorial serves to commemorate the victims of a tragic natural disaster."
Synonyms: celebrate; honor; laud; mark; memorial; memorialize
Opposite Meaning: forget

composed (adjective) /kəmˈpoʊzd/
Definition: Calm, collected, and self-possessed, especially in stressful or challenging situations.
Example Sentence: "Despite the intense pressure, the surgeon remained composed during the complex operation."
Synonyms: calm; collected; confident; cool; poised; serene
Opposite Meaning: agitated

cooperative (adjective) /koʊˈɒp ər ə tɪv/
Definition: Willingly and actively participating in working together with others towards a shared goal or objective.
Example Sentence: "The cooperative attitude of the employees created a positive work environment."
Synonyms: accommodating; agreeable; amicable; collaborative; compliant; congenial
Opposite Meaning: uncooperative

cosmos (noun) /ˈkɒz moʊs/
Definition: The vast and orderly universe, including all matter, energy, and space.
Example Sentence: "The cosmos is an intricate web of celestial bodies, interconnected through gravitational forces."
Synonyms: celestial; creation; existence; firmament; galaxy; heavens
Opposite Meaning: chaos

countermeasure (noun) /ˈkaʊn tərˌmɛʒ ər/
Definition: A specific action, strategy, or precautionary measure implemented to address or mitigate a potential threat, risk, or undesirable situation.
Example Sentence: "The military devised effective countermeasures to neutralize enemy threats."
Synonyms: antidote; defense; guard; precaution; preventive; protection
Opposite Meaning: hazard

cutaneous (adjective) /kjuːˈteɪnɪəs/
Definition: Relating to the skin or pertaining to its characteristics, functions, or conditions.
Example Sentence: "The cutaneous rash was a symptom of the allergic reaction."
Synonyms: dermal; dermatological; epidermal; integumentary; outer; protective
Opposite Meaning: internal

disenchanted (adjective) /ˌdɪsɪnˈtʃɑːntɪd/
Definition: Disillusionment, disappointment, or loss of belief or satisfaction in something or someone.
Example Sentence: "She was disenchanted with the city life and decided to move to the countryside."
Synonyms: cynical; disappointed; discontented; disgruntled; disillusioned; dissatisfied
Opposite Meaning: enchanted

disenchantment (noun) /ˌdɪsɪnˈtʃɑːntmənt/
Definition: A state or feeling of disappointment, disillusionment, or loss of belief in something that was previously held as magical, idealized, or captivating.
Example Sentence: "After the initial excitement wore off, the travelers experienced a sense of disenchantment with the tourist destination."
Synonyms: despondency; disaffection; disappointment; discouragement; disheartenment; disillusion
Opposite Meaning: enchantment

dishonor (noun) /dɪsˈɒn ər/
Definition: The loss or violation of one's honor, integrity, or reputation.
Example Sentence: "He felt a deep sense of dishonor after betraying his friend's trust."
Synonyms: blemish; blot; discredit; disgrace; disrepute; humiliation
Opposite Meaning: honor

domain (noun) /doʊˈmeɪn/
Definition: A distinct and definable area, realm, or scope that is characterized by its own set of attributes, boundaries, or subject matter.
Example Sentence: "The internet has become a vast domain of information and communication."
Synonyms: arena; dominion; jurisdiction; orbit; province; purview
Opposite Meaning: periphery

dumbfound (verb) /ˈdʌmfaʊnd/
Definition: To leave someone speechless or unable to react because they are so surprised or shocked.
Example Sentence: "The unexpected twist in the story will dumbfound readers."
Synonyms: astonish; astound; bewilder; confuse; flabbergast; flummox
Opposite Meaning: clarify

dunce (noun) /dʌns/
Definition: An individual who is considered to be intellectually challenged, lacking in intelligence, or displaying a consistent inability to grasp or understand even simple concepts.
Example Sentence: "The dunce of the group always seemed to misunderstand even the simplest instructions."
Synonyms: blockhead; dimwit; dolt; dullard; fool; idiot
Opposite Meaning: genius

empathetic (adjective) /ˌɛm pəˈθɛt ɪk/
Definition: Having the ability to understand and share the feelings, emotions, or experiences of others.
Example Sentence: "His empathetic nature allowed him to connect deeply with the emotions of those around him."
Synonyms: attentive; caring; comforting; compassionate; considerate; kind
Opposite Meaning: unfeeling

expenditure (noun) /ɪkˈspɛn dɪ tʃər/
Definition: The act or process of spending money, resources, or effort in order to acquire goods, services, or achieve certain goals.
Example Sentence: "The company's expenditure on marketing increased significantly this year."
Synonyms: consumption; cost; disbursal; disbursement; expense; investment
Opposite Meaning: saving

forecourt (noun) /ˈfɔrˌkɔrt/
Definition: An open area or space located at the front of a building or property.
Example Sentence: "The car dealership had an expansive forecourt with rows of shiny vehicles on display."
Synonyms: atrium; concourse; courtyard; entrance; foyer; piazza
Opposite Meaning: back

harmony (noun) /ˈhɑr mə ni/
Definition: A state or quality of agreement, compatibility, and cohesion between different elements or individuals.
Example Sentence: "The choir sang in perfect harmony, creating a beautiful and unified sound."
Synonyms: accord; agreement; balance; blend; coherence; concord
Opposite Meaning: discord

hydraulic (adjective) /hʌɪˈdrɒlɪk/
Definition: Powered by the movement of liquids, such as water or oil, under pressure.
Example Sentence: "The hydraulic cylinders were used to open and close the dam gates."
Synonyms: aquapneumatic; aqueous; fluidic; hydrokinetic; hydropneumatics; hydrostatic
Opposite Meaning: electric

idiocy (noun) /ˈɪd i ə si/
Definition: A state or quality of extreme foolishness, lack of intelligence, or senselessness.
Example Sentence: "His decision to jump off the roof was an act of sheer idiocy."
Synonyms: absurdity; brainlessness; folly; foolishness; ignorance; imbecility
Opposite Meaning: wisdom

idiosyncrasy (noun) /ˌɪdɪə(ʊ)ˈsɪŋkrəsi/
Definition: A characteristic or behavior that is peculiar to a specific person or group of people.
Example Sentence: "She had an idiosyncrasy of humming to herself when she was working."
Synonyms: characteristic; eccentricity; foible; habit; mannerism; oddity
Opposite Meaning: normality

incandescent (adjective) /ɪnkanˈdɛs(ə)nt/
Definition: Overflowing with emotion, displaying a radiant and intense energy.
Example Sentence: "The protesters were incandescent with rage as they faced off against the police."
Synonyms: angry; boiling; choked; enraged; fuming; furious
Opposite Meaning: dull

infantile (adjective) /ˈɪnfəntʌɪl/
Definition: Childish, immature, or characteristic of an infant or very young child.
Example Sentence: "She found his jokes to be infantile and not funny."
Synonyms: adolescent; babyish; bratty; childish; immature; jejune
Opposite Meaning: mature

infernal (adjective) /ɪnˈfɜr nl/
Definition: Associated with hell, the underworld, or intense heat and flames.
Example Sentence: "The infernal heat of the desert was unbearable for the travelers."
Synonyms: cursed; demonic; devilish; diabolical; fiendish; hellfire
Opposite Meaning: heavenly

insane (adjective) /ɪnˈseɪn/
Definition: Exhibiting extreme mental instability, irrationality, or madness.
Example Sentence: "After pulling an all-nighter, I felt like I was going insane from exhaustion."
Synonyms: bonkers; crazy; demented; deranged; frenzied; lunatic
Opposite Meaning: sane

intertwine (verb) /ˌɪn tərˈtwaɪn/
Definition: To interlace, entwine, or weave together distinct elements or entities to create a complex and interconnected whole.
Example Sentence: "The branches of the trees intertwine to form a natural canopy above the path."
Synonyms: braid; coil; entwine; interlace; interlock; intertwist
Opposite Meaning: separate

invite (verb) /ɪnˈvaɪt/
Definition: To request or extend an invitation to someone, typically to join or attend a particular event, gathering, or occasion.
Example Sentence: "She received an invite to the exclusive gala event."
Synonyms: ask; beckon; bid; call; entice; entreat
Opposite Meaning: dismiss

irreducible (adjective) /ˌɪrɪˈdjuːsɪbl/
Definition: Cannot be reduced, simplified, or made smaller in size or complexity.
Example Sentence: "In his heart, there was an irreducible hope that things would change."
Synonyms: essential; immutable; inalienable; inalterable; indivisible; inexorable
Opposite Meaning: reducible

joust (verb) /dʒaʊst/
Definition: To engage in a formal combat or competition on horseback, typically with lances, between two knights.
Example Sentence: "The two knights prepared to joust in the grand tournament."
Synonyms: battle; challenge; clash; combat; compete; confront
Opposite Meaning: agree

justification (noun) /ˌdʒʌs tə fɪˈkeɪ ʃən/
Definition: The act or process of providing valid reasons or explanations to support a belief, action, decision, or course of conduct.
Example Sentence: "She provided a strong justification for her absence, explaining the family emergency."
Synonyms: defense; excuse; explanation; grounds; pretext; rationale
Opposite Meaning: condemnation

justify (verb) /ˈdʒʌstɪfʌɪ/
Definition: To provide an explanation or reasoning that supports or defends a decision, action, or belief.
Example Sentence: "She had to justify her absence from work with a doctor's note."
Synonyms: condone; explain; legitimize; rationalize; substantiate; uphold
Opposite Meaning: condemn

kindling (noun) /ˈkɪnd lɪŋ/
Definition: Small pieces of dry wood or other easily combustible material used to start a fire.
Example Sentence: "He gathered a bundle of dry twigs and leaves for the kindling."
Synonyms: brushwood; firestarter; firewood; fuel; ignite; shavings
Opposite Meaning: damp wood

lassitude (noun) /ˈlasɪtjuːd/
Definition: A state of physical or mental weariness, often accompanied by a lack of energy and motivation.
Example Sentence: "The dull, gray weather seemed to contribute to her feeling of lassitude."
Synonyms: enervation; exhaustion; inertia; languor; lethargy; listlessness
Opposite Meaning: vigor

linguist (noun) /ˈlɪŋ gwɪst/
Definition: An individual who is skilled in the study and analysis of languages.
Example Sentence: "The linguist studied ancient texts to understand the evolution of languages."
Synonyms: dialectologist; etymologist; glossologist; grammatician; lexicographer; philologist
Opposite Meaning: novice

lodging (noun) /lɒdʒ ɪŋ/
Definition: A temporary place or accommodation where individuals or groups can stay.
Example Sentence: "We booked a cozy lodging near the beach for our weekend getaway."
Synonyms: abode; accommodation; domicile; dwelling; habitation; housing
Opposite Meaning: homelessness

mainstay (noun) /ˈmeɪnˌsteɪ/
Definition: A principal or essential element that provides stability, support, or strength to a particular system, organization, or endeavor.
Example Sentence: "In times of crisis, family often becomes the mainstay of support and comfort."
Synonyms: anchor; backbone; bedrock; bulwark; cornerstone; foundation
Opposite Meaning: weakness

manhood (noun) /ˈmæn hʊd/
Definition: The qualities, characteristics, and societal expectations associated with being an adult male.
Example Sentence: "His sense of manhood was deeply rooted in his ability to provide for his family."
Synonyms: adulthood; maleness; manfulness; manliness; masculinity; maturity
Opposite Meaning: boyhood

metacognition (noun) /ˌmɛt ə kɒgˈnɪʃ ən/
Definition: The awareness and understanding of one's own cognitive processes and the ability to reflect upon and regulate them.
Example Sentence: "Successful learners often utilize metacognition to monitor their understanding."
Synonyms: appraisal; awareness; cognizance; consciousness; evaluation; insight
Opposite Meaning: unawareness

misfortune (noun) /mɪsˈfɔr tʃən/
Definition: An event, circumstance, or situation that brings about adversity, hardship, or unfavorable outcomes.
Example Sentence: "Despite his misfortunes, he remained resilient and determined to rebuild his life."
Synonyms: adversity; calamity; catastrophe; difficulty; disaster; hardship
Opposite Meaning: fortune

mourn (verb) /mɔrn/
Definition: To express deep sorrow, grief, or sadness, typically in response to the loss or death of a loved one.
Example Sentence: "The entire community came together to mourn the tragic loss of a young life."
Synonyms: ache; bemoan; bewail; deplore; grieve; keen
Opposite Meaning: celebrate

munitions (noun) /mjuːˈnɪʃənz/
Definition: Military supplies, specifically weapons, ammunition, and other materials used in warfare or armed conflicts.
Example Sentence: "The soldiers loaded their rifles with fresh munitions before heading into battle."
Synonyms: ammo; armament; arms; artillery; explosives; firepower
Opposite Meaning: peace offerings

narcissistic (adjective) /ˌnɑr səˈsɪs tɪk/
Definition: Displaying excessive self-admiration, a grandiose sense of self-importance, and an overwhelming preoccupation with their own needs and desires.
Example Sentence: "The narcissistic boss took credit for his team's achievements without acknowledging their contributions."
Synonyms: arrogant; boastful; conceited; egocentric; egotistical; haughty
Opposite Meaning: selfless

naughty (adjective) /ˈnɔ ti/
Definition: Disobedient, mischievous, or playful in a lighthearted and sometimes mildly inappropriate or cheeky way.
Example Sentence: "The toddler gave a naughty grin before running off with his sister's toys."
Synonyms: cheeky; disobedient; frisky; impish; impudent; mischievous
Opposite Meaning: obedient

nervous (adjective) /ˈnɜr vəs/
Definition: Anxiety, unease, or apprehension.
Example Sentence: "The athlete's nervous energy was palpable before the big game."
Synonyms: agitated; anxious; apprehensive; edgy; fidgety; jumpy
Opposite Meaning: calm

nightcap (noun) /ˈnaɪtˌkæp/
Definition: A beverage, typically alcoholic, consumed before going to bed or as a way to wind down in the evening.
Example Sentence: "The herbal tea served as a perfect non-alcoholic nightcap before bed."
Synonyms: bevvie; brew; cocktail; draught; drink; libation
Opposite Meaning: starter

outrageous (adjective) /aʊtˈreɪdʒəs/
Definition: Extreme, excessive, or beyond what is considered acceptable or normal.
Example Sentence: "His outrageous behavior at the party caused quite a scene."
Synonyms: appalling; atrocious; diabolical; disgraceful; egregious; execrable
Opposite Meaning: reasonable

penitent (adjective) /ˈpɛn ɪ tənt/
Definition: Deep regret or remorse for one's actions or wrongdoing.
Example Sentence: "The thief appeared penitent as he returned the stolen goods and offered an apology."
Synonyms: apologetic; ashamed; atoning; contrite; guilty; regretful
Opposite Meaning: unrepentant

perverted (adjective) /pərˈvɜr tɪd/
Definition: Deviating from what is considered morally or socially acceptable.
Example Sentence: "He had a perverted fascination with violence and gore."
Synonyms: aberrant; abnormal; corrupted; debased; decadent; depraved
Opposite Meaning: wholesome

pester (verb) /ˈpɛs tər/
Definition: To annoy or bother someone persistently, typically through repeated requests, demands, or actions.
Example Sentence: "The telemarketers pester me daily with unwanted calls."
Synonyms: annoy; badger; bother; disturb; harass; hassle
Opposite Meaning: please

placid (adjective) /ˈplasɪd/
Definition: Calm, peaceful, and undisturbed, often in a way that evokes a sense of serenity and tranquility.
Example Sentence: "The sound of the waterfall filled the air, its placid flow soothing to the soul."
Synonyms: collected; composed; gentle; mild; quiet; still
Opposite Meaning: turbulent

preposterous (adjective) /prɪˈpɒst(ə)rəs/
Definition: Utterly absurd, illogical, or contrary to reason or common sense to such an extreme degree that it is difficult to take seriously.
Example Sentence: "She thought his excuse for being late was preposterous."
Synonyms: asinine; bizarre; irrational; laughable; ludicrous; nonsensical
Opposite Meaning: sensible

preservation (noun) /ˌprɛz ərˈveɪ ʃən/
Definition: The act or process of protecting, conserving, or safeguarding something from decay, damage, or deterioration.
Example Sentence: "The museum is dedicated to the preservation of ancient artifacts and artworks."
Synonyms: care; conservation; custody; maintenance; perpetuation; protection
Opposite Meaning: destruction

principle (noun) /ˈprɪn sə pə/
Definition: A fundamental truth, law, or belief that serves as a foundation or guiding concept.
Example Sentence: "Honesty and integrity are guiding principles in his life."
Synonyms: axiom; belief; concept; doctrine; ethic; guideline
Opposite Meaning: falsehood

prosthetic (adjective) /prɒsˈθɛtɪk/
Definition: Relating to or involving artificial body parts or devices designed to replace or enhance the function of missing or impaired body parts.
Example Sentence: "The athlete competed in the Paralympics with a prosthetic leg."
Synonyms: artificial; bionic; engineered; false; imitative; replacement
Opposite Meaning: natural

repose (noun) /rɪˈpoʊz/
Definition: A state of rest, tranquility, or relaxation, often characterized by a peaceful and untroubled state of being.
Example Sentence: "The cat lay in peaceful repose on the windowsill."
Synonyms: calmness; downtime; ease; inactivity; leisure; peace
Opposite Meaning: agitation

retiring (adjective) /rɪˈtaɪər ɪŋ/
Definition: Tending to be shy, reserved, or introverted in social situations.
Example Sentence: "The retiring student preferred to sit quietly in the library rather than join the bustling cafeteria."
Synonyms: bashful; demure; discreet; introverted; modest; quiet
Opposite Meaning: outgoing

revivify (verb) /rɪˈvɪv əˌfaɪ/
Definition: To revitalize or restore something or someone, often bringing them back to life or reinvigorating them.
Example Sentence: "She hoped that a vacation would revivify her weary spirit."
Synonyms: awaken; energize; enliven; invigorate; reanimate; refresh
Opposite Meaning: suppress

shelter (noun) /ˈʃɛl tər/
Definition: A place or structure that provides protection, safety, and refuge from external elements, dangers, or adverse conditions.
Example Sentence: "The homeless man sought shelter under the bridge to escape the cold wind."
Synonyms: accommodation; asylum; cover; dwelling; harbor; haven
Opposite Meaning: exposure

slapdash (adjective) /ˈslæpˌdæʃ/
Definition: Done hastily, carelessly, and without proper attention to detail or organization.
Example Sentence: "The builder's slapdash work resulted in several structural issues with the building."
Synonyms: careless; casual; disorganized; hasty; perfunctory; reckless
Opposite Meaning: meticulous

spillway (noun) /ˈspɪlˌweɪ
Definition: A structure or channel designed to divert or control the flow of water from a reservoir, dam, or other water containment system.
Example Sentence: "The spillway diverted the rushing water away from the dam, preventing a potential disaster."
Synonyms: channel; chute; conduit; diversion; drain; escape
Opposite Meaning: blockage

subsume (verb) /səbˈsjuːm/
Definition: To include or absorb something into a larger group or category.
Example Sentence: "The new theory will subsume all previous hypotheses."
Synonyms: assimilate; constitute; contain; embody; encompass; entail
Opposite Meaning: exclude

sucker (noun) /ˈsʌk ər/
Definition: A person who is easily deceived, gullible, or prone to being taken advantage of.
Example Sentence: "I can't believe I was such a sucker and fell for that scam."
Synonyms: candy; chump; confection; dupe; fool; gull
Opposite Meaning: skeptic

teeming (adjective) /ˈti mɪŋ/
Definition: Being abundantly filled, overflowing, or swarming with activity, life, or a particular thing.
Example Sentence: "The teeming streets of the city buzzed with the sounds of honking cars and bustling pedestrians."
Synonyms: abundant; brimming; bustling; buzzing; crowded; lively
Opposite Meaning: empty

telltale (noun) /ˈtɛlˌteɪl/
Definition: A subtle or revealing sign or clue that provides information or indicates something specific.
Example Sentence: "The dark circles under his eyes were a telltale indication of his lack of sleep."
Synonyms: clue; evidence; giveaway; hint; indication; indicator
Opposite Meaning: disguise

timely (adjective) /ˈtʌɪmli/
Definition: Happening or is done at a favorable or appropriate moment.
Example Sentence: "The timely intervention of the firefighter saved the house from burning down."
Synonyms: convenient; fitting; fortunate; judicious; opportune; pertinent
Opposite Meaning: untimely

trinity (noun) /ˈtrɪnɪti/
Definition: A group or trio of three people, things, or elements that are closely associated or interconnected, often forming a unified whole.
Example Sentence: "The trinity of the Father, Son, and Holy Spirit is central to Christian belief."
Synonyms: threesome; triad; trifecta; trilogy; trio; triple
Opposite Meaning: singularity

unmarried (adjective) /ʌnˈmærɪd/
Definition: Not legally or formally married.
Example Sentence: "The unmarried couple decided to live together before getting married."
Synonyms: bachelor; celibate; partnerless; single; solitary; solo
Opposite Meaning: married

volant (adjective) /ˈvoʊ lənt/
Definition: Capable of flying or has the ability to move through the air.
Example Sentence: "The delicate butterfly displayed its volant beauty as it flitted from flower to flower."
Synonyms: aerial; airborne; avian; flitting; floating; fluttering
Opposite Meaning: grounded