Synonyms|913Antonyms|179|Broader|11Narrower|5Related|734
4
inevitably(adverb, absolutely, clearly, definitely, plainly)
4
just so(expression, idiom, adverb, good, fine)
4
perfectly(adverb, absolutely)
4
sure enough(expression, idiom, adverb, certainty)
4
unavoidably(adverb, necessarily, inevitably, automatically)
4
utterly(adverb, absolutely)
4
verily(adverb, truth, really)
4
yea(adverb, good, fine, assent, agreed)
3
all right(expression, adverb, interjection, good, fine)
3
amen(interjection, good, fine, absolutely, very)
3
apparently
3
beyond question
3
conclusively(adverb, absolutely)
3
downright(adverb, absolutely, really, positively, clearly)
3
forsooth
3
genuinely
3
in reality(expression, idiom, adverb, truth)
3
inescapably(adverb, completely, seriously, definitely, naturally)
3
inexorably(adverb, absolutely, completely, clearly, definitely)
3
reliably(adverb, reliably, dependably)
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HarvardSmart Define 2016, certainly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/certainly/thesaurus/synonyms>.
MLASmart Define. "certainly thesaurus" 30 March 2016. Web. 22 September 2026. <https://smartdefine.org/certainly/thesaurus/synonyms>