29
definitely(adverb, interjection, certainly)
25
absolutely(adverb, interjection, affirm, certainly)
20
certainly(adverb, interjection, assent, certainly)
19
positively(adverb, interjection, well, certainly, easily)
17
surely(adverb, well, absolutely, exactly, certainly)
14
indubitably(adverb, interjection, affirm, certainly)
14
undoubtedly(adverb, affirm, certainly)
13
for sure(expression, idiom, adverb)
12
unquestionably(adverb, doubt, affirm, assent, certainly)
9
certainty
9
of course(expression, idiom, interjection, assent)
9
yes(adverb, interjection, affirm, assent)
8
clearly(adverb, certainly)
7
certain
7
obviously(adverb, certainly)
7
to be sure(expression, idiom, adverb, interjection)
7
undeniably(adverb, certainly)
6
doubtless(adverb, likely, assent, certainly)
6
naturally(interjection, assent)
6
unequivocally(adverb, certainly)
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APASmart Define. (2015). assuredly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/assuredly/thesaurus/synonyms
ChicagoSmart Define. 2015. "assuredly thesaurus" https://smartdefine.org/assuredly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, assuredly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/assuredly/thesaurus/synonyms>.
MLASmart Define. "assuredly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/assuredly/thesaurus/synonyms>