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more certain

ADJECTIVE

confident

Synonyms

STRONGEST

convinced positive sure

WEAK

assertive assured believing calm cocksure questionless sanguine satisfied secure self-confident unconcerned undisturbed undoubtful undoubting unperturbed untroubled

Antonyms

STRONGEST

doubtful indefinite uncertain unsure

WEAK

doubting dubious faltering hesitant questionable unconfident undecided unfixed unpredictable unreliable

ADJECTIVE

fixed

Synonyms

STRONGEST

definite sure

WEAK

assured bound certified concluded decided determined ensured established guaranteed insured set settled stated stipulated warranted

Antonyms

STRONGEST

indefinite uncertain

WEAK

doubtful doubting dubious faltering hesitant questionable unconfident undecided unfixed unpredictable unreliable unsure

ADJECTIVE

referring to a specifically known amount

Synonyms

STRONGEST

individual numerous particular precise special specific specified various

WEAK

a couple a few defined divers express many marked one regular several singular some sundry upwards of

Antonyms

STRONGEST

common general imprecise indefinite inexact ordinary unimportant usual

WEAK

doubtful doubting dubious faltering hesitant questionable uncertain unconfident undecided unfixed unpredictable unreliable unsure

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Flight is more certain that a deal will be coming in a few days for two reasons.

From MarketWatch • May 29, 2026

What’s more certain is that, for now, investors are focused on a new business opportunity for the company.

From Barron's • May 22, 2026

Everything gets a little jammy, a little darker, a little more certain of its purpose.

From Salon • Mar. 17, 2026

And I've never been more certain about anything.

From BBC • Mar. 7, 2026

He smiled, and so did she, for she then felt more certain than ever that she had chosen the correct brother for a partner in escape.

From "From the Mixed-Up Files of Mrs. Basil E. Frankweiler" by E.L. Konigsburg