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

150 entries under confirm topic. ×

9
vouch(verb, support, give, back, sign)
9
warrant(verb, support, show, maintain, determine)
8
document(verb, show, determine, explain)
8
testify(verb, support, show, maintain, back)
7
strengthen(verb, encourage, powerful, story)
6
assert(verb, support, show, maintain, favor)
6
check(verb, support, show, determine, back)
6
evidence(noun, verb, support, show, determine)
6
try(verb, check, show, determine, examine)
5
approve(verb, support, hold, help, maintain)
5
declare(verb, support, show, maintain, determine)
5
evince(verb, show, determine, establish, express)
5
guarantee(verb, support, maintain, back, declare)
5
swear(verb, show, prove, appear)
5
test(verb, check, show, determine, examine)
5
witness(verb, support, show, maintain, determine)
4
aver(verb, show, prove, appear)
4
avow(verb, support, maintain, back, declare)
4
clear(verb, support, maintain, favor, sustain)
4
maintain(verb, support, hold, help, favor)
For more, visit Substantiate on Power Thesaurus
11 years ago|11k views|share |citing 
APASmart Define. (2015). substantiate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>