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sure

adjective

Synonyms and Antonyms of sure

1 having or showing a mind free from doubt

  • are you absolutely sure that she said she was coming today?
Synonyms of sure

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

self-assured, self-conceited, self-confident

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

hesitant, indecisive, vacillating, wavering

diffident, unassuming
Antonyms of sure

doubtful, dubious, uncertain, unsure

2 impossible to avoid or evade

  • the jokeʼs a sure dud if you donʼt pause in the right places
Synonyms of sure

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

decided, definite, settled

likely, possible, probable

destined, fated, foreordained, predestined, predetermined, preordained

inexorable, relentless, unremitting, unstoppable
Phrases Synonymous with sure

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

preventable (also preventible)

doubtful, dubious, questionable, shaky, unclear

undecided, unsettled

undependable, unreliable

improbable, unlikely
Antonyms of sure

avoidable, evadable, uncertain, unsure

3 not likely to fail

  • a sure cure for the winter blues—a week in the Bahamas
Synonyms of sure

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

dependable, reliable

deadly, unerring
Near Antonyms of sure

doubtful, questionable, uncertain
Antonyms of sure

fallible

4 worthy of one's trust

  • a sister is a sure friend for life
Synonyms of sure

calculable, dependable, good, reliable, responsible, safe, secure, solid, steady, tried, tried-and-true, true, trustable, trustworthy, trusty
Words Related to sure

constant, devoted, faithful, fast, loyal, staunch (also stanch), steadfast, true-blue

honest, sincere, single-minded

infallible, unerring

bedrock, firm, sound, strong

effective, telling

attested, authenticated, confirmed, proven, valid, validated, verified

blameless, faultless, guiltless, impeccable, inerrant, irreproachable, unimpeachable, unquestionable
Near Antonyms of sure

disloyal, faithless, false, fickle, inconstant, perfidious, recreant, traitorous, treacherous, unfaithful, untrue

deceitful, dishonest, lying, mendacious, untruthful

debatable, disputable, doubtable, doubtful, dubious, fishy, problematic (also problematical), questionable, shady, shaky, suspect, uncertain, unsound

hazardous, risky

unconfirmed, untried
Antonyms of sure

dodgy [chiefly British], uncertain, undependable, unreliable, unsafe, untrustworthy

5 not capable of being challenged or proved wrong

  • no sure evidence that life exists on other planets
Synonyms of sure

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

unambiguous, unequivocal

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

uncontested, uncontradicted, undisputed, unquestioned
Near Antonyms of sure

controversial, debated, disputed

doubtful, dubious, iffy, inconclusive, indecisive, uncertain

ambiguous, equivocal

academic (also academical), hypothetical, speculative, theoretical (also theoretic)
Antonyms of sure

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

Synonym Discussion of sure

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

sure

adverb

Synonyms and Antonyms of sure

without any question

  • we sure could use your help here
Synonyms of sure

all right, alright, assuredly, certainly, clearly, definitely, doubtless, easily, forsooth, hands down, inarguably, incontestably, incontrovertibly, indeed, indisputably, plainly, really, so, surely, truly, unarguably, undeniably, undoubtedly, unquestionably
Words Related to sure

conceivably, likely, perhaps, possibly, probably

obviously, unmistakably
Phrases Synonymous with sure

by all means, by all odds, damn well, for certain, for sure

Learn More about sure

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

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