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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.

The cross-party MPs' report said it was "shocking and unacceptable" that the Home Office could not keep track of all those whose claims had failed, therefore not knowing with certainty who remained in the UK.

From BBC • Jun. 5, 2026

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

"We do not know currently with certainty what species of shark was involved. Possible candidates are bull or tiger sharks," he said.

From Barron's • May 24, 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

You might know with certainty that the entire subprime mortgage bond market was doomed, but you could do nothing about it.

From "The Big Short" by Michael Lewis

with certainty

Example Sentences

Related Words