4
acknowledge(verb, affirm)
4
assert(verb, support, state, show, maintain)
4
avow(verb, support, state, maintain, back)
4
bear
4
check(verb, support, show, determine, back)
4
evince(verb, state, show, determine, declare)
4
guarantee(verb, support, state, maintain, back)
4
maintain(verb, support, back, declare, confirm)
4
resolve
4
sanction(verb, support, state, back, sign)
4
state(verb, confirm, appear, affirm, verify)
4
vindicate(verb, support, maintain, defend, prove)
3
accept(verb, authorize, sanction, affirm, legalize)
3
bear witness(verb, expression, state, show, declare)
3
check out(verb, expression, phrasal verb, support, back)
3
claim(verb, maintain, defend, uphold, prove)
3
contend(verb, support, maintain, back, declare)
3
countersign(verb, state, show, sign, confirm)
3
defend(verb, maintain, claim, uphold, prove)
3
encourage(verb, substantiate)
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APASmart Define. (2015). corroborate thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/corroborate/thesaurus/synonyms
ChicagoSmart Define. 2015. "corroborate thesaurus" https://smartdefine.org/corroborate/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, corroborate thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/corroborate/thesaurus/synonyms>.
MLASmart Define. "corroborate thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/corroborate/thesaurus/synonyms>