Definitely Synonyms

54 definitely synonyms include certainly, surely, for sure, unquestionably, without/beyond doubt, without/beyond question, beyond any doubt, and assuredly. Definitely is an adverb, and its antonyms are possibly and doubtfully. Here are some additional synonyms for "definitely" with example sentences.

Another word for Definitely

54 other ways to say definitely.

  • without fail
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  • without/beyond question  
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  • without/beyond doubt  
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  • unquestionably  
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  • unmistakably  
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  • unequivocally  
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  • undoubtedly
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  • undeniably  
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  • transparently  
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  • there are no two ways about it  
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  • there's no denying it  
  •  
  • surely
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  • positively  
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  • plainly  
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  • patently  
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  • palpably  
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  • obviously  
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  • needless to say  
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  • irrefutably  
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  • indubitably  
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  • incontrovertibly  
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  • incontestably  
  •  
  • for sure  
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  • far and away  
  •  
  • easily  
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  • decidedly  
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  • clearly
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  • certainly
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  • categorically  
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  • by a mile  
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  • beyond any doubt  
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  • assuredly  
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  • as sure as eggs is eggs  
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  • absolutely
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2. naturally

  • to be sure  
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  • obviously  
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  • not unexpectedly  
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  • needless to say  
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  • naturally  
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  • natch  
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  • it goes without saying  
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  • clearly
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  • certainly
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  • as you/one would expect  
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  • as was anticipated  
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  • as might be expected  
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  • as a matter of course  
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3. yes

Use definitely in a Sentence

His weight loss goal is definitely achievable.

I will definitely join you.

She is definitely the best.

This project will definitely succeed.