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Adjective
Example: “I am certain about it.”
Synonyms: sure
Antonyms: uncertain
Noun
Example: “The new venture attracted investors.”
Synonyms: enterprise, project
Antonyms: safe routine
Example: “She had no qualm about refusing.”
Synonyms: doubt, hesitation
Antonyms: certainty
Example: “This scenario is possible.”
Synonyms: situation, case
Example: “Parliament passed a new law.”
Synonyms: legislature
Antonyms: court
Example: “There is little likelihood of rain today.”
Synonyms: chance, probability
Antonyms: impossibility, certainty
Adverb
Example: “The box was insecurely tied.”
Synonyms: uncertainly, unsafely
Antonyms: securely, confidently
Example: “She has strong academic credentials.”
Synonyms: qualification, certificate
Antonyms: disqualification, inadequacy
Example: “She spoke with deep conviction.”
Synonyms: belief, certainty
Antonyms: doubt, uncertainty
Example: “The company must prove compliance with safety rules.”
Synonyms: obedience, conformity
Antonyms: violation, resistance
Verb
Example: “It is useless to speculate without evidence.”
Synonyms: guess, theorize
Antonyms: know, verify
Example: “Public sentiment changed after the report.”
Synonyms: feeling, opinion
Antonyms: apathy, indifference
Example: “The Earth turns on its axis.”
Synonyms: center line
Antonyms:
Example: “She laid the book on the table.”
Synonyms: put, place
Antonyms: lift
Example: “You need to act quickly in an emergency.”
Synonyms: do, perform
Antonyms: delay
Example: “I doubt that he will come on time.”
Synonyms: question, uncertainty
Antonyms: trust, certainty
Example: “Are you sure about your answer?”
Synonyms: certain
Antonyms: unsure
Example: “Scientists hypothesize that the climate was once much wetter.”
Synonyms: theorize, speculate
Antonyms: verify, confirm
Example: “She showed unwavering support throughout the crisis.”
Synonyms: steadfast, firm
Antonyms: uncertain, wavering
Example: “This is your chance to improve.”
Synonyms: opportunity
Example: “The proscription of certain chemicals reduced contamination.”
Synonyms: ban
Antonyms: permission
Example: “The media’s speculation increased after the announcement.”
Synonyms: guesswork
Example: “The area is known for its strong winds.”
Synonyms: famous
Antonyms: unknown
Example: “This street is broad and busy.”
Synonyms: wide
Antonyms: narrow
Example: “It is likely to rain today.”
Synonyms: probable
Antonyms: unlikely
Example: “His response was deliberately equivocal.”
Synonyms: ambiguous, unclear
Antonyms: explicit
Example: “She felt ambivalence about the decision.”
Synonyms: uncertainty, conflict
Example: “I wonder what will happen.”
Synonyms: think, question
Antonyms: know
Example: “He seems tired.”
Synonyms: appear, look
Antonyms: be
Example: “He continued working late.”
Synonyms: keep, proceed
Antonyms: stop
Example: “His tentativeness disappeared once he saw the results.”
Example: “Some refactoring was inevitable as the product scaled.”
Example: “We made a tentative plan and will confirm it tomorrow.”
Example: “Uncertainty is inherent in innovative work.”
Synonyms: intrinsic, implicit, intrinsical
/ɪnˈʃʊr/
Example: “Ensure everyone understands.”
Synonyms: ascertain, control, assure
/ˈsʌmtaɪmz/
Example: “Sometimes I cook dinner.”
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