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with certainty

ADVERB

positively

Synonyms

STRONGEST

certainly easily emphatically firmly undoubtedly

WEAK

amen assuredly categorically doubtless doubtlessly flat flat out for a fact indubitably no catch no holds barred no ifs ands or buts no kicker no strings attached on the money on the nose really truly right on sure surely the ticket to a tee undeniably unequivocally unmistakably unquestionably without qualification

Antonyms

STRONGEST

doubtfully questionably

ADVERB

surely

Synonyms

STRONGEST

absolutely assuredly certainly clearly definitely evidently indeed inevitably inexorably plainly undoubtedly unquestionably

WEAK

admittedly beyond doubt beyond shadow of doubt come what may conclusively decidedly distinctly doubtlessly explicitly fixedly for certain indubitably infallibly irrefutably manifestly nothing else but positively rain or shine to be sure unequivocally unerringly unfailingly unmistakably unshakably without fail

Antonyms

STRONGEST

doubtfully dubiously indefinite indefinitely questionably vaguely

WEAK

uncertain

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.

We would no longer have to make assumptions about individuals’ preferences because we would know them with certainty.

From The Wall Street Journal • Jun. 2, 2026

“One thing we can say with certainty is that we are back to a lopsided ‘bad breadth’ market,” writes Rosenberg Research’s David Rosenberg.

From Barron's • May 29, 2026

Even if an investor has decided with certainty that semiconductors and other names linked to the artificial-intelligence theme are currently in a bubble, deciding what to do next isn’t always so easy, Donnelly added.

From MarketWatch • May 15, 2026

But on 12 March during his first press conference since the war, he said that he could not "say with certainty that the Iranian people will bring down the regime".

From BBC • Mar. 16, 2026

But there is no way to know with certainty.

From "Killers of the Flower Moon" by David Grann

with certainty

Example Sentences

Related Words