306 entries under verb topic. ×

11
warrant(support, state, show, maintain)
10
document(show, determine, confirm, explain)
9
vouch(support, state, give, back)
8
justify(support, show, increase, maintain)
8
testify(support, state, show, back)
7
approve(support, state, back, sign)
7
back up(expression, phrasal verb, support, verify)
7
buttress(support, increase, present, establish)
7
manifest(show, determine, idea, confirm)
7
reinforce(support, increase, establish, extend)
7
underpin(support, back, sign, uphold)
6
witness(support, state, show, maintain)
5
assure(support, state, maintain, back)
5
aver(state, show, confirm, prove)
5
avouch(affirm, evince)
5
bolster(support, increase, establish, extend)
5
circumstantiate(support, determine, back, sign)
5
declare(support, state, show, maintain)
5
evidence(noun, support, show, determine)
5
fortify(support, increase, establish, extend)
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APASmart Define. (2015). corroborate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/corroborate/thesaurus/synonyms
ChicagoSmart Define. 2015. "corroborate thesaurus" https://smartdefine.org/corroborate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, corroborate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/corroborate/thesaurus/synonyms>.
MLASmart Define. "corroborate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/corroborate/thesaurus/synonyms>