12
precisely(adverb, good, fine, true, sure)
12
really(adverb, absolutely, exactly, positively, certainly)
12
undeniably(adverb, certainly, categorically)
11
plainly(adverb, certainly)
11
unconditionally(adverb, absolutely, completely, exactly, positively)
10
of course(expression, idiom, adverb, interjection, absolutely)
10
perfectly(adverb, absolutely, really, truly, reliably)
9
certainty
9
explicitly
9
unqualifiedly(adverb, absolutely, categorically)
9
wholly(adverb, completely)
8
yes(adverb, interjection, just, absolutely, exactly)
8
certain
8
decisively
8
distinctly(adverb, absolutely, positively, certainly, precisely)
8
quite
8
to be sure(expression, idiom, adverb, interjection)
8
unmistakably(adverb, absolutely, positively, certainly, easily)
7
specifically(adverb, just, absolutely, exactly, clearly)
7
doubtlessly(adverb, absolutely, really, exactly, certainly)
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APASmart Define. (2016). definitely thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/definitely/thesaurus/synonyms
ChicagoSmart Define. 2016. "definitely thesaurus" https://smartdefine.org/definitely/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, definitely thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/definitely/thesaurus/synonyms>.
MLASmart Define. "definitely thesaurus" 18 February 2016. Web. 20 September 2026. <https://smartdefine.org/definitely/thesaurus/synonyms>