Definitely
Definitely adverb - Without any question.
Not likely and definitely are semantically related. In some cases you can use "Not likely" instead an adverb "Definitely".
Not likely
Definitely and not likely are semantically related. Sometimes you can use "Definitely" instead an adverb phrase "Not likely".
Mutual synonyms
Both terms in one sentence
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The Primarchs and Astartes might qualify, the Imperium definitely created the Life Eater, and it's entirely possible, if not likely, that the Imperium has created much more.
Source: Scale of Scientific Sins
Cite this Source
Not likely and Definitely. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/definitely/not_likely
Definitely & Not likely. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/definitely/not_likely>.
Not likely or Definitely. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/definitely/not_likely.
Google Ngram Viewer shows how "definitely" and "not likely" have occurred on timeline