7
assert(verb, state, give, maintain, agree)
7
avow(verb, state, give, maintain, agree)
7
depose(verb, agree, allow, acknowledge, admit)
7
endorse(verb, support, state, back, sign)
7
promise(verb, give, declare, assert, engage)
7
prove(verb, support, give, back, confirm)
6
authenticate(verb, support, state, back, sign)
6
ensure(verb, declare, commit, undertake, affirm)
6
pledge(verb, pass, catch, declare, commit)
6
predicate(verb, state, give, maintain, agree)
6
uphold(verb, support, give, back, sign)
5
bear witness(verb, expression, idiom, evidence)
5
maintain(verb, state, give, agree, allow)
5
profess(verb, state, give, maintain, agree)
4
acknowledge(verb, state, maintain, agree, allow)
4
back(verb, support, give, maintain, sign)
4
contend(verb, support, state, give, maintain)
4
insure(verb, declare, commit, undertake, affirm)
4
protest
4
secure(verb, declare, commit, undertake, affirm)
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APASmart Define. (2015). vouch thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/vouch/thesaurus/synonyms
ChicagoSmart Define. 2015. "vouch thesaurus" https://smartdefine.org/vouch/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, vouch thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/vouch/thesaurus/synonyms>.
MLASmart Define. "vouch thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/vouch/thesaurus/synonyms>