2
answer for(expression, support, maintain, secure, back)
2
apostle(noun, advocate, supporter, follower, fanatic)
2
approve(verb, support, state, praise, favor)
2
ascertain(state, show, determine, confirm, verify)
2
assert(verb, support, state, show, present)
2
authentication(noun, information, reason, approval, picture)
2
autograph(verb, sign, confirm, endorse)
2
averment(noun, information, mark, sign, reason)
2
avowal(statement, evidence, proof, declaration, verification)
2
back(verb, support, show, maintain, determine)
2
beam(verb, mark, consider, see, respect)
2
bear out(verb, expression, phrasal verb, support, show)
2
bless(verb, support, praise, favor, back)
2
card(verb, make, mean, show, mark)
2
circumstantiate(verb, support, back, sign, uphold)
2
cojuror
2
connote(verb, make, mean, show, mark)
2
consider(verb, see, note, regard, catch)
2
cosign(verb, support, maintain, secure, back)
2
credential(noun, statement, tribute, recommendation, testimony)
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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>