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.

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

Perhaps the only thing that can be said with certainty about Kevin Warsh’s press conference following his first meeting as Federal Reserve chair this week is that he will have a captive audience.

From MarketWatch • Jun. 14, 2026

Araghchi urged caution, telling Iranian state media that until a complete agreement was reached on all issues, "it cannot be said with certainty that an understanding has been achieved".

From Barron's • Jun. 13, 2026

While it's possible some areas might reach this definition, it is still a little too early to say with certainty.

From BBC • Jun. 10, 2026

Looking at him from such close range, it strikes me now with certainty that it’s not the first time I’ve laid eyes on this totally unbelievable guy.

From "I'll Give You the Sun" by Jandy Nelson

with certainty

Example Sentences

Related Words