Synonyms|913Antonyms|179|Broader|11Narrower|5Related|734
1
emphatically(adverb, definitely)
1
even so(expression, idiom, good, fine, assent)
1
eventually
1
expressly
1
faithfully(adverb, reliably)
1
fatefully
1
finally
1
finitely
1
fixed
1
flatly(adverb, categorically)
1
for a certainty(expression, idiom)
1
for a fact(expression, idiom)
1
for real
1
freeway
1
full well
1
gladly(good, fine, agreed)
1
gosh
1
granted(good, fine, assent, agreed)
1
guaranteed
1
happen
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APASmart Define. (2016). certainly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/certainly/thesaurus/synonyms
ChicagoSmart Define. 2016. "certainly thesaurus" https://smartdefine.org/certainly/thesaurus/synonyms (accessed September 22, 2026).
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>