12 entries under easily topic. ×

44
surely(adverb, good, fine, absolutely)
36
absolutely(adverb, interjection, certain, limited, well)
27
indubitably(adverb, interjection, absolutely, clearly)
27
unquestionably(adverb, doubt, absolutely, assent)
26
undoubtedly(adverb, certain, limited, absolutely, positively)
16
doubtless(adjective, adverb, certain, limited, certainty)
16
undeniably(adverb, absolutely, very, positively)
12
categorically(adverb, well, absolutely, exactly)
12
indeed(adverb, well, truth, absolutely, assent)
9
sure(adjective, adverb, interjection, fine, certainty)
7
precisely(adverb, good, fine, well, absolutely)
3
amen(interjection, good, fine, absolutely, very)
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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>