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Definitions

no doubt

ADVERB
easily
Synonyms
STRONGEST
actually certainly clearly definitely probably really surely
WEAK
absolutely almost certainly assuredly beyond question by far decidedly doubtless doubtlessly far and away indeed indisputably indubitably plainly positively truly undeniably undoubtedly unequivocally unquestionably
Antonyms
STRONGEST
doubtfully dubiously indefinitely questionably
WEAK
difficultly doubtedly dubitably
ADVERB
for sure
Synonyms
WEAK
certainly dead sure definitely for a fact for certain for real no question no two ways about it really surely unquestionably
ADVERB
likely
Synonyms
STRONGEST
presumably
WEAK
assumably doubtless doubtlessly in all likelihood in all probability like as not most likely presumptively prima facie seemingly to all appearances
Antonyms
WEAK
improbably unlikely
ADVERB
necessarily
Synonyms
STRONGEST
automatically naturally undoubtedly unquestionably
WEAK
accordingly as a matter of course axiomatically beyond one's control by definition by its own nature cardinally come what may compulsorily consequently exigently from within fundamentally incontrovertibly indubitably ineluctably inescapably inexorably irresistibly of course of necessity perforce positively pressingly significantly unpreventably vitally willy-nilly without fail
Antonyms
STRONGEST
doubtfully questionably
WEAK
unnecessarily
ADVERB
probably
Synonyms
STRONGEST
apparently doubtless perhaps possibly presumably seemingly
STRONG
believably plausibly
WEAK
as likely as not as the case may be assumably dollars to doughnuts expediently feasibly imaginably in all likelihood in all probability like enough maybe most likely one can assume perchance practicably presumptively reasonably to all appearances
Antonyms
STRONGEST
improbably uncertain unlikely

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.

"Fine, you are taking the country forward on the diplomatic front, no doubt," he said.

From Barron's • Apr. 21, 2026

When the sequel was greenlit, there were no doubt hundreds of hours of marketing meetings, where executives decided which aspects of the first film could be played up to promote the sequel.

From Salon • Apr. 20, 2026

You’ll probably go straight from “Lorne” to rewatching notorious moments like the controversial Season 3 “stunt baby” sketch — and this is no doubt Michaels’ preferred outcome.

From Los Angeles Times • Apr. 17, 2026

There is no doubt that Rasputin’s presence in the royal household deepened mistrust toward Nicholas and Alexandra.

From The Wall Street Journal • Apr. 17, 2026

The look of determination on her face could leave no doubt she came to this meeting to fight.

From "Witchlings" by Claribel A. Ortega