115 entries under support topic. ×

19
attest(verb, law, state, make)
15
testify(verb, law, state, make)
14
certify(verb, state, show, maintain)
13
evidence(noun, verb, show, information)
13
vouch(verb, state, give, maintain)
10
sign(noun, verb, name, make)
9
confirm(verb, state, show, maintain)
9
endorse(verb, state, maintain, secure)
9
prove(verb, state, make, mean)
7
avow(verb, state, maintain, back)
7
warrant(noun, verb, state, show)
6
affirm(verb, state, show, maintain)
6
assure(verb, state, maintain, secure)
6
aver(verb, state, show, maintain)
5
authenticate(verb, state, show, determine)
5
corroborate(verb, state, show, maintain)
5
evince(verb, state, make, mean)
5
subscribe(verb, back, sign, confirm)
5
substantiate(verb, show, maintain, determine)
5
swear(verb, law, state, give)
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APASmart Define. (2015). witness thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/witness/thesaurus/synonyms
ChicagoSmart Define. 2015. "witness thesaurus" https://smartdefine.org/witness/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, witness thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/witness/thesaurus/synonyms>.
MLASmart Define. "witness thesaurus" 23 December 2015. Web. 29 September 2026. <https://smartdefine.org/witness/thesaurus/synonyms>