14 entries under certainly topic. ×

5
truly(adverb, well, absolutely, really)
3
absolutely(adverb, well, really, exactly)
3
exactly(adverb, absolutely, very, really)
2
definitely(adverb, absolutely, really, exactly)
1
admittedly(adverb, well, absolutely, really)
1
categorically(adverb, well, absolutely, really)
1
doubtlessly(adverb, absolutely, very, really, exactly)
1
indeed(adverb, well, absolutely, really)
1
undoubtedly(adverb, well, absolutely, really)
1
unmistakably(adverb, well, absolutely, easily)
1
unquestionably(adverb, well, absolutely, really)
1
very(adverb, absolutely, really, exactly)
0
doubtless(adverb, definitely, undoubtedly, indubitably)
0
without doubt(expression, adverb, very, exactly)
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APASmart Define. (2015). authentically thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/authentically/thesaurus/synonyms
ChicagoSmart Define. 2015. "authentically thesaurus" https://smartdefine.org/authentically/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, authentically thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/authentically/thesaurus/synonyms>.
MLASmart Define. "authentically thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/authentically/thesaurus/synonyms>