Definitely
Definitely adverb - Without any question.
Usage example: that is definitely the kind of dog we're looking to adopt
Sure and definitely are semantically related in exclamation topic. In some cases you can use "Sure" instead the word "Definitely" as an adverb or an adjective.
Sure
Sure adverb - Without any question.
Usage example: we sure could use your help here
Definitely and sure are semantically related in exclamation topic. Sometimes you can use "Definitely" instead an adverb "Sure".
Nearby Word: surely
Mutual synonyms
Both words in one sentence
- He has still shown to be quite Ax-Crazy even after turning good, so it's definitely not sure that he refuses to kill his opponents even though he might not do it in cold blood.
Source: Thou Shalt Not Kill -
Secondary Character Title: The good doctor is a memorable character, to be sure, but definitely not the main one.
Source: Film / Dr. Strangelove - Ceilidh herself isn't sure whether she likes Joe, Iain, or Phoebe... but definitely not Alan.
Source: Love Dodecahedron / Web Comics
Cite this Source
Sure and Definitely. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/definitely/sure
Definitely & Sure. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/definitely/sure>.
Sure or Definitely. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/definitely/sure.
Google Ngram Viewer shows how "definitely" and "sure" have occurred on timeline