English Antonyms for Doubt and Skepticism Vocabulary Words – Online Quiz!

assume (verb) /əˈsum/
Definition: To take or accep something to be true, without concrete evidence or proof.
Antonyms quiz: Choose the opposite meaning of assume.
Options: believe; conjecture; deduce; doubt
Answer: doubt
Example sentence: "We cannot simply assume that everything will go according to plan."

cavil (verb) /ˈkavəl/
Definition: To make petty or trivial objections, criticisms, or complaints, often with the intention of finding fault or nitpicking over minor details.
Antonyms quiz: Choose the opposite meaning of cavil.
Options: carp; complain; criticize; accept
Answer: accept
Example sentence: "When he’s in a bad mood, he'll cavil at anything that's said in the conversation."

conjectural (adjective) /kənˈdʒɛk tʃər əl/
Definition: Based on conjecture or speculation rather than factual evidence or certainty.
Antonyms quiz: Choose the opposite meaning of conjectural.
Options: assumptive; conjectured; hypothetical; factual
Answer: factual
Example sentence: "The historical account included conjectural explanations for the missing pieces of the narrative."

controvert (verb) /ˈkɒn trəˌvɜrt/
Definition: To dispute or challenge something, particularly an idea or a statement, often in a vigorous and argumentative manner.
Antonyms quiz: Choose the opposite meaning of controvert.
Options: challenge; contest; contradict; agree
Answer: agree
Example sentence: "It is difficult to controvert the historical facts that have been established by reputable scholars."

cynical (adjective) /ˈsɪnɪk(ə)l/
Definition: Having a skeptical or mistrusting attitude towards people, society, or motives.
Antonyms quiz: Choose the opposite meaning of cynical.
Options: contemptuous; derisive; disillusioned; trusting
Answer: trusting
Example sentence: "The student was cynical about the effectiveness of the new education policy."

cynicism (noun) /ˈsɪn əˌsɪz əm/
Definition: An attitude or belief characterized by skepticism, distrust, and a general inclination to question the motives and sincerity of others.
Antonyms quiz: Choose the opposite meaning of cynicism.
Options: disbelief; disillusionment; distrust; optimism
Answer: optimism
Example sentence: "The politician's cynicism towards the government was well-known."

debunk (verb) /diːˈbʌŋk/
Definition: To expose or prove that a claim or belief is false, exaggerated, or fraudulent.
Antonyms quiz: Choose the opposite meaning of debunk.
Options: challenge; confute; discredit; confirm
Answer: confirm
Example sentence: "In an era of misinformation, fact-checkers play a crucial role in debunking false narratives and falsehoods."

deterrent (noun) /dɪˈtɛrənt/
Definition: Something that serves to discourage or prevent a particular action or behavior.
Antonyms quiz: Choose the opposite meaning of deterrent.
Options: barrier; discouragement; disincentive; incentive
Answer: incentive
Example sentence: "The strict laws serve as a deterrent for illegal activities."

disbelief (noun) /ˌdɪs bɪˈlif/
Definition: A state of skepticism, doubt, or incredulity towards something that is difficult to accept or comprehend.
Antonyms quiz: Choose the opposite meaning of disbelief.
Options: cynicism; doubt; hesitation; belief
Answer: belief
Example sentence: "The audience erupted in disbelief when the magician made the elephant disappear."

disbeliever (noun) /ˌdɪsbɪˈliːvə/
Definition: A person who holds a lack of belief or skepticism towards a particular idea, concept, belief system, or proposition.
Antonyms quiz: Choose the opposite meaning of disbeliever.
Options: agnostic; atheist; cynic; believer
Answer: believer
Example sentence: "The scientist was a disbeliever in pseudoscience, demanding evidence for any claim."

disillusion (verb) /ˌdɪsɪˈluʒən/
Definition: To cause someone to realize that their beliefs or expectations about someone or something were wrong.
Antonyms quiz: Choose the opposite meaning of disillusion.
Options: debunk; disabuse; disappoint; delude
Answer: delude
Example sentence: "The students need to disillusion themselves from the idea that success comes without effort."

disillusionment (noun) /ˌdɪs ɪˈlu ʒən mənt/
Definition: A state of disappointment, loss of faith, or a feeling of being let down when one's expectations, beliefs, or ideals are shattered or proven to be false or unrealistic.
Antonyms quiz: Choose the opposite meaning of disillusionment.
Options: betrayal; cynicism; disaffection; contentment
Answer: contentment
Example sentence: "The artist's struggle to gain recognition led to a sense of disillusionment with the art world."

dispel (verb) /dɪˈspɛl/
Definition: To make something disappear or to drive it away by removing doubt, fear, or misconception.
Antonyms quiz: Choose the opposite meaning of dispel.
Options: allay; banish; cancel; confirm
Answer: confirm
Example sentence: "Simple words alone cannot dispel the lingering pain of a profound loss."

dither (verb) /ˈdɪðə/
Definition: To be indecisive, hesitant, or uncertain when faced with a choice or decision.
Antonyms quiz: Choose the opposite meaning of dither.
Options: dally; dawdle; equivocate; decide
Answer: decide
Example sentence: "The CEO can't afford to dither about the merger any longer."

doubt (verb) /daʊt/
Definition: To question or feel uncertain about something.
Antonyms quiz: Choose the opposite meaning of doubt.
Options: apprehend; challenge; disbelieve; trust
Answer: trust
Example sentence: "Many people doubt the accuracy of that controversial report."

dubious (adjective) /ˈdjuːbɪəs/
Definition: Uncertain or questionable in nature, often giving rise to suspicion, doubt, or hesitation.
Antonyms quiz: Choose the opposite meaning of dubious.
Options: ambiguous; distrustful; doubtful; certain
Answer: certain
Example sentence: "The quality of the product was met with dubious reviews."

dubiously (adverb) /ˈdjuːbiəsli/
Definition: With uncertainty, skepticism, or doubt.
Antonyms quiz: Choose the opposite meaning of dubiously.
Options: ambiguously; cynically; doubtfully; certainly
Answer: certainly
Example sentence: "The politician made a dubiously confident statement during the press conference."

fallible (adjective) /ˈfalɪb(ə)l/
Definition: Susceptible to making mistakes, errors, or being wrong from time to time.
Antonyms quiz: Choose the opposite meaning of fallible.
Options: deficient; errant; erring; infallible
Answer: infallible
Example sentence: "The system was fallible and prone to errors, causing frequent malfunctions."

faltering (adjective) /ˈfɔːltərɪŋ/
Definition: Hesitant, unsteady, or showing signs of uncertainty or weakness.
Antonyms quiz: Choose the opposite meaning of faltering.
Options: hesitant; inconsistent; indecisive; confident
Answer: confident
Example sentence: "The company's faltering sales prompted them to reassess their marketing strategy."

flummoxed (adjective) /ˈflʌməkst/
Definition: Confused, perplexed, or bewildered.
Antonyms quiz: Choose the opposite meaning of flummoxed.
Options: baffled; bamboozled; befuddled; clear
Answer: clear
Example sentence: "He was flummoxed by the unexpected turn of events and didn't know how to react."

hesitant (adjective) /ˈhɛzɪt(ə)nt/
Definition: Displaying a lack of confidence, uncertainty, or reluctance in one's actions, decisions, or responses.
Antonyms quiz: Choose the opposite meaning of hesitant.
Options: averse; disinclined; doubtful; decisive
Answer: decisive
Example sentence: "The student was hesitant to speak up in class, fearing they may say something wrong."

hesitate (verb) /ˈhɛz ɪˌteɪt/
Definition: To pause or show reluctance before taking an action or making a decision.
Antonyms quiz: Choose the opposite meaning of hesitate.
Options: delay; dither; equivocate; proceed
Answer: proceed
Example sentence: "If you hesitate in making a decision, you might miss out on an amazing opportunity."

implausible (adjective) /ɪmˈplɔ zə bəl/
Definition: Difficult to believe or accept due to a lack of credibility, logic, or reason.
Antonyms quiz: Choose the opposite meaning of implausible.
Options: doubtful; fantastical; improbable; plausible
Answer: plausible
Example sentence: "It seemed implausible that a cat could climb such a tall tree."

inconceivable (adjective) /ˌɪnkənˈsiːvəbl/
Definition: Difficult or impossible to imagine, believe, or understand.
Antonyms quiz: Choose the opposite meaning of inconceivable.
Options: boggling; implausible; impossible; plausible
Answer: plausible
Example sentence: "The level of corruption within the government was inconceivable to the general public."

incredulity (noun) /ˌɪn krɪˈdu lɪ ti/
Definition: A state of disbelief, skepticism, or unwillingness to accept something as true or genuine.
Antonyms quiz: Choose the opposite meaning of incredulity.
Options: disbelief; distrust; doubt; credulity
Answer: credulity
Example sentence: "Incredulity washed over her face as she discovered the truth about her long-lost sibling."

incredulous (adjective) /ɪnˈkrɛdjʊləs/
Definition: Skeptical or doubtful about something, often indicating a lack of belief or trust.
Antonyms quiz: Choose the opposite meaning of incredulous.
Options: cynical; disbelieving; distrustful; credulous
Answer: credulous
Example sentence: "The news was so surprising that even the normally calm teacher appeared incredulous."

incredulously (adverb) /ɪnˈkrɛdʒ ə ləs li/
Definition: Characterized by disbelief or skepticism.
Antonyms quiz: Choose the opposite meaning of incredulously.
Options: amazedly; astoundedly; disapprovingly; credulously
Answer: credulously
Example sentence: "He incredulously questioned the validity of the so-called miracle cure."

irrational (adjective) /ɪræʃənəl/
Definition: Lacking reason, logic, or sound judgment.
Antonyms quiz: Choose the opposite meaning of irrational.
Options: absurd; crazy; delusional; rational
Answer: rational
Example sentence: "The company's decision to lay off experienced employees and retain less qualified ones seemed irrational from a business perspective."

irresolute (adjective) /ɪˈrɛz əˌlut/
Definition: Lacking firmness, determination, or the ability to make decisive choices.
Antonyms quiz: Choose the opposite meaning of irresolute.
Options: ambivalent; dithering; doubtful; determined
Answer: determined
Example sentence: "The team's irresolute leader hindered progress on the project."

lapse (noun) /laps/
Definition: A temporary failure, error, or deviation from a particular standard, state, or course of action.
Antonyms quiz: Choose the opposite meaning of lapse.
Options: blunder; breach; bungle; uphold
Answer: uphold
Example sentence: "The team's lapse in performance cost them the game."

misgiving (noun) /mɪsˈɡɪvɪŋ/
Definition: A feeling of doubt, suspicion, or apprehension about something, especially about a decision or course of action.
Antonyms quiz: Choose the opposite meaning of misgiving.
Options: anxiety; concern; dubiety; confidence
Answer: confidence
Example sentence: "Despite his misgiving, he reluctantly agreed to the plan."

mistrustfully (adverb) /ˌmɪsˈtrʌstfʊli/
Definition: Performed with a sense of suspicion, skepticism, or lack of trust.
Antonyms quiz: Choose the opposite meaning of mistrustfully.
Options: apprehensively; cynically; doubtfully; trustfully
Answer: trustfully
Example sentence: "They exchanged glances, eyeing each other mistrustfully."

naysayer (noun) /ˈneɪˌseɪ ər/
Definition: A person who habitually expresses negative or pessimistic views, particularly in the face of new ideas, proposals, or endeavors.
Antonyms quiz: Choose the opposite meaning of naysayer.
Options: antagonist; complainer; contrarian; optimist
Answer: optimist
Example sentence: "The naysayers were quick to dismiss the artist's work as unoriginal."

oppugn (verb) /əˈpyun/
Definition: To question the validity or truth of an idea, a claim, or a person's actions.
Antonyms quiz: Choose the opposite meaning of oppugn.
Options: argue; challenge; contest; accept
Answer: accept
Example sentence: "It is important to oppugn discriminatory practices."

qualm (noun) /kwɑːm/
Definition: A feeling of uneasiness, doubt or hesitation, often about the morality or propriety of a particular action or decision.
Antonyms quiz: Choose the opposite meaning of qualm.
Options: anxiety; apprehension; compunction; certainty
Answer: certainty
Example sentence: "The decision weighed on him, causing a deep moral qualm."

questionable (adjective) /ˈkwɛs tʃə nə bəl/
Definition: Raising doubts, uncertainties, or suspicions about its reliability, truthfulness, or legitimacy.
Antonyms quiz: Choose the opposite meaning of questionable.
Options: debatable; doubtful; dubious; reliable
Answer: reliable
Example sentence: "The validity of the study's results was called into question due to its questionable research methodology."

rebut (verb) /rɪˈbʌt/
Definition: To contradict or disprove an argument or statement, typically by providing evidence or reasoning to the contrary.
Antonyms quiz: Choose the opposite meaning of rebut.
Options: challenge; confute; contest; agree
Answer: agree
Example sentence: "The lawyer skillfully rebutted the prosecution's claims in court."

refute (verb) /rɪˈfjuːt/
Definition: To disprove, discredit, or contradict an argument, statement, or claim.
Antonyms quiz: Choose the opposite meaning of refute.
Options: challenge; confute; contradict; confirm
Answer: confirm
Example sentence: "To refute the rumor, he shared his alibi publicly."

sceptic (noun) /ˈskɛp tɪk/
Definition: An individual who maintains a skeptical or questioning attitude towards beliefs, claims, or assertions, particularly those that are widely accepted or considered as common knowledge.
Antonyms quiz: Choose the opposite meaning of sceptic.
Options: agnostic; critic; cynic; believer
Answer: believer
Example sentence: "The sceptic remained unconvinced by the psychic's predictions, questioning their validity."

shady (adjective) /ˈʃeɪ di/
Definition: Of suspicion, doubt, or untrustworthiness.
Antonyms quiz: Choose the opposite meaning of shady.
Options: deceitful; dodgy; dubious; honest
Answer: honest
Example sentence: "We decided not to go into that shady neighborhood after hearing about the recent crimes."

skeptical (adjective) /ˈskɛp tɪ kəl/
Definition: Characterized by doubt, questioning, and a critical approach towards accepting claims, assertions, or beliefs.
Antonyms quiz: Choose the opposite meaning of skeptical.
Options: cautious; cynical; disbelieving; credulous
Answer: credulous
Example sentence: "Her skeptical nature made her a discerning consumer."

skepticism (noun) /ˈskɛp təˌsɪz əm/
Definition: An attitude or state of mind characterized by doubt, questioning, or a tendency to withhold belief or acceptance of certain claims, ideas, or propositions.
Antonyms quiz: Choose the opposite meaning of skepticism.
Options: cynicism; disbelief; doubt; credulity
Answer: credulity
Example sentence: "The journalist approached the sensational news story with healthy skepticism."

suspicion (noun) /səˈspɪʃ ən/
Definition: A feeling or belief that someone is guilty of wrongdoing, without having conclusive evidence or proof.
Antonyms quiz: Choose the opposite meaning of suspicion.
Options: apprehension; distrust; doubt; certainty
Answer: certainty
Example sentence: "The sudden disappearance of the money raised suspicion among the employees."

suspicious (adjective) /səˈspɪʃ əs/
Definition: Arousing doubt, mistrust, or a sense of caution due to something or someone's peculiar or questionable nature.
Antonyms quiz: Choose the opposite meaning of suspicious.
Options: distrustful; doubtful; dubious; trusting
Answer: trusting
Example sentence: "Her evasive answers raised suspicion about her involvement in the crime."

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

uncertain (adjective) /ʌnˈsɜr tn/
Definition: Doubt, hesitation, or a lack of confidence about something.
Antonyms quiz: Choose the opposite meaning of uncertain.
Options: ambiguous; doubtful; dubious; certain
Answer: certain
Example sentence: "The student's performance in the exam was uncertain, as they struggled with the subject."

unsure (adjective) /ʌnˈʃʊər/
Definition: Uncertainty, doubt, or a lack of confidence.
Antonyms quiz: Choose the opposite meaning of unsure.
Options: ambiguous; doubtful; dubious; sure
Answer: sure
Example sentence: "The team was unsure about the best approach to solve the complex problem."

untenable (adjective) /ʌnˈtɛnəb(ə)l/
Definition: Unsustainable, indefensible, or unable to be maintained, often due to fundamental flaws or contradictions.
Antonyms quiz: Choose the opposite meaning of untenable.
Options: flawed; implausible; inadmissible; sustainable
Answer: sustainable
Example sentence: "The argument he presented was untenable and easily disproved."

vacillate (verb) /ˈvasɪleɪt/
Definition: To waver or be indecisive, particularly in relation to making a decision or taking action.
Antonyms quiz: Choose the opposite meaning of vacillate.
Options: alternate; change; dither; resolve
Answer: resolve
Example sentence: "The stock market can vacillate between periods of growth and decline."

waver (verb) /ˈweɪvə/
Definition: To fluctuate between different opinions or decisions, to hesitate or be uncertain about something.
Antonyms quiz: Choose the opposite meaning of waver.
Options: dither; falter; flicker; steadfast
Answer: steadfast
Example sentence: "The flame began to waver in the gentle breeze."

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