7
surely(adverb, absolutely, really, certainly, clearly)
6
certainly(adverb, absolutely, really, positively, clearly)
6
for sure(expression, idiom, adverb, absolutely, completely)
4
absolutely(adverb, just, really, completely, quite)
3
indeed(adverb, just, absolutely, really, completely)
3
positively(adverb, just, absolutely, clearly, plainly)
3
sure(adjective, adverb, certain, definite, obvious)
3
truly(adverb, just, absolutely, completely, quite)
2
clearly(adverb, absolutely, really, certainly, definitely)
2
definitely(adverb, absolutely, really, clearly, plainly)
2
doubtless
2
explicitly(adverb, just, absolutely, completely, quite)
2
sure enough(expression, adjective, adverb, indisputable, unequivocal)
2
unequivocally(adverb, just, absolutely, completely, quite)
2
unerringly(adverb, just, absolutely, completely, quite)
1
accurately
1
admittedly(adverb, absolutely, certainly, clearly, definitely)
1
all locked up(expression, adjective, expected, predictable, necessary)
1
altogether
1
assured(adjective, expected, predictable, necessary, inexorable)
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APASmart Define. (2015). for certain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/for_certain/thesaurus/synonyms
ChicagoSmart Define. 2015. "for certain thesaurus" https://smartdefine.org/for_certain/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, for certain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/for_certain/thesaurus/synonyms>.
MLASmart Define. "for certain thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/for_certain/thesaurus/synonyms>