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certain

adjective

Synonyms and Antonyms of certain

1 known but not named
  • A certain person told me that today is your birthday.
Synonyms of certain

anonymous, given, one, some, unidentified, unnamed, unspecified
Words Related to certain

particular, specific
Near Antonyms of certain

known, named, specified
2 having or showing a mind free from doubt
  • I'm certain that they'll arrive on time.
Synonyms of certain

assured, clear, cocksure, confident, doubtless, implicit, positive, sanguine, sure
Words Related to certain

self-assured, self-conceited, self-confident

decisive, resolute, unfaltering, unhesitating, unquestioning, unwavering
Near Antonyms of certain

hesitant, indecisive, vacillating, wavering

diffident, unassuming
Antonyms of certain

doubtful, dubious, uncertain, unsure
3 having been established and usually not subject to change
  • A certain percentage of the profits will go to charity.
Synonyms of certain

determinate, final, firm, fixed, flat, frozen, hard, hard-and-fast, inexpugnable, set, settled, stable
Words Related to certain

nonadjustable, noncancelable, nonnegotiable, unchangeable

constant, steady, unchanging, uniform, unwavering

definite, exact, explicit, specific

given, stated, stipulated

dependable, good, reliable, responsible, safe, solid, sure, tried, tried-and-true, true, trustworthy, trusty
Near Antonyms of certain

adjustable, changeable, negotiable

indefinite, open-ended, unspecified

capricious, changeful, flickery, fluctuating, fluid, inconstant, mercurial, mutable, temperamental, uncertain, unpredictable, unsettled, unstable, unsteady, variable, volatile
4 impossible to avoid or evade
  • As he got older, the athlete began to feel the certain effects of the aging process on his body.
Synonyms of certain

ineluctable, ineludible, inescapable, inevitable, necessary, sure, unavoidable, unescapable
Words Related to certain

decided, definite, settled

likely, possible, probable

destined, fated, foreordained, predestined, predetermined, preordained

inexorable, relentless, unremitting, unstoppable
Phrases Synonymous with certain

in the bag, in the cards (also on the cards)
Near Antonyms of certain

preventable (also preventible)

doubtful, dubious, questionable, shaky, unclear

undecided, unsettled

undependable, unreliable

improbable, unlikely
Antonyms of certain

avoidable, evadable, uncertain, unsure
5 not likely to fail
  • Chicken soup is grandma's certain cure for pretty much whatever ails you.
Synonyms of certain

can't-miss, fail-safe, infallible, sure, surefire, unfailing
Words Related to certain

dependable, reliable

deadly, unerring
Near Antonyms of certain

doubtful, questionable, uncertain
Antonyms of certain

fallible
6 not capable of being challenged or proved wrong
  • Up to this point there's been no certain evidence that a crime has been committed.
Synonyms of certain

accomplished, inarguable, incontestable, incontrovertible, indisputable, indubitable, irrefragable, irrefutable, positive, sure, unanswerable, unarguable, unchallengeable, undeniable, unquestionable
Words Related to certain

unambiguous, unequivocal

absolute, clear, conclusive, decisive, definite, hands-down

uncontested, uncontradicted, undisputed, unquestioned
Near Antonyms of certain

controversial, debated, disputed

doubtful, dubious, iffy, inconclusive, indecisive, uncertain

ambiguous, equivocal

hypothetical, speculative, theoretical (also theoretic)
Antonyms of certain

answerable, arguable, contradictable, controvertible, debatable, disputable, doubtable, moot, negotiable, problematic (also problematical), questionable, refutable

Synonym Discussion of certain

sure, certain, positive, cocksure mean having no doubt or uncertainty. sure usually stresses the subjective or intuitive feeling of assurance.
    • felt sure that I had forgotten something
certain may apply to a basing of a conclusion or conviction on definite grounds or indubitable evidence.
    • police are certain about the cause of the fire
positive intensifies sureness or certainty and may imply opinionated conviction or forceful expression of it.
    • I'm positive that's the person I saw
cocksure implies presumptuous or careless positiveness.
    • you're always so cocksure about everything

Learn More about certain

  1. See words that rhyme with certain Dictionary: Definition of certain Spanish Central: Translation of certain Nglish: Translation of certain for Spanish speakers Britannica English: Translation of certain for Arabic speakers

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