6
affirm(verb, support, state, show, maintain)
6
argue(verb, state, make, give, mean)
6
assure(verb, support, state, maintain, secure)
6
attestor(noun, proof, observer, watcher, spectator)
6
aver(verb, support, state, show, maintain)
6
avouch(verb, state, maintain, declare, confirm)
6
betoken(verb, state, give, mean, show)
6
confirmation(noun, information, mark, sign, reason)
6
countersign(verb, state, show, sign, approve)
6
deponent(noun, law, person, evidence, proof)
6
discover(verb, mark, see, note, regard)
6
interpret
6
regard(verb, mark, consider, see, note)
6
sight(verb, see, note, regard, catch)
6
spot(verb, mark, consider, see, note)
6
spy(verb, mark, consider, see, respect)
6
testifier(noun, law, person, proof, observer)
6
voucher(noun, indication, statement, tribute, recommendation)
5
acknowledge(verb, state, sign, confirm, assert)
5
attestator
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APASmart Define. (2015). witness thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/witness/thesaurus/synonyms
ChicagoSmart Define. 2015. "witness thesaurus" https://smartdefine.org/witness/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, witness thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/witness/thesaurus/synonyms>.
MLASmart Define. "witness thesaurus" 23 December 2015. Web. 1 October 2026. <https://smartdefine.org/witness/thesaurus/synonyms>