Synonyms|673Antonyms|118|Broader|13Narrower|17Related|401

150 entries under confirm topic. ×

4
settle(verb, support, show, determine, back)
4
try out(verb, expression, phrasal verb, check, examine)
4
vouch for(verb, expression, show, prove)
3
assay(verb, check, show, determine, examine)
3
assure(verb, support, maintain, back, declare)
3
attest to(verb, expression, phrasal verb, support, maintain)
3
check out(verb, expression, phrasal verb, support, back)
3
exhibit(verb, show, complete, establish, express)
3
experiment(verb, check, show, determine, examine)
3
explain(verb, support, show, determine, favor)
2
asseverate(verb, support, maintain, back, declare)
2
bear witness(verb, expression, show, prove)
2
contend(verb, support, maintain, favor, back)
2
debunk(verb, support, back, sign, idea)
2
double-check(verb, support, back, explain)
2
excuse(noun, verb, support, maintain, favor)
2
get behind(verb, expression, support, hold, help)
2
give a tryout(expression, idiom, check, examine, try)
2
indicate(verb, state, show, prove)
2
legalize(verb, support, favor, sustain)
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APASmart Define. (2015). substantiate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>