with certainty

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positively adv.
surely adv.

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.

See Examples For:

with certainty

Even so, scientists still cannot say with certainty which volcanic feature is erupting, how deep the active vent originally was, or when it last erupted.

From Science Daily ● Jul. 10, 2026

What Adams can say with certainty, however, is that in the future the U.S. will have no room for error.

From Los Angeles Times ● Jun. 26, 2026

No-one knows with certainty what kind of helium-3 concentrations are present on the moon.

From BBC ● Jun. 16, 2026

“And most people don’t know with certainty that they’ve planned enough for such a crisis.”

From MarketWatch ● Jun. 15, 2026

“Of course I’ll watch Melody,” she’d said with certainty.

From "Out of My Mind" by Sharon M. Draper

with certainty

Example Sentences

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