304 entries under support topic. ×

14
demonstrate(verb, state, check, show)
14
uphold(verb, help, show, accept)
13
back(verb, help, show, accept)
13
fortify(verb, strong, increase, encourage)
12
aver(verb, state, show, maintain)
12
sign(noun, verb, name, accept)
12
warrant(verb, show, maintain, determine)
11
assert(verb, state, show, maintain)
11
guarantee(noun, verb, state, maintain)
11
justify(verb, show, increase, maintain)
11
reinforce(verb, increase, encourage, establish)
11
testify(verb, state, show, maintain)
9
accredit(verb, state, accept, praise)
9
asseverate(verb, state, maintain, agree)
9
permit(verb, state, clear, accept)
9
profess(verb, state, accept, maintain)
9
witness(verb, state, show, maintain)
8
avow(verb, state, accept, maintain)
8
back up(verb, expression, phrasal verb, maintain)
8
buttress(verb, help, increase, keep)
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APASmart Define. (2015). confirm thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/confirm/thesaurus/synonyms
ChicagoSmart Define. 2015. "confirm thesaurus" https://smartdefine.org/confirm/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, confirm thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/confirm/thesaurus/synonyms>.
MLASmart Define. "confirm thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/confirm/thesaurus/synonyms>