33 entries under prove topic. ×

10
confirm(verb, state, show, sign, approve)
9
affirm(verb, state, show, sign, approve)
9
certify(verb, state, show, sign, approve)
8
ratify(verb, state, show, approve, confirm)
8
warrant(noun, verb, state, show, approve)
7
witness(verb, state, show, sign, approve)
5
authenticate(verb, state, show, sign, approve)
5
corroborate(verb, state, show, sign, confirm)
5
seal(verb, state, show, secure, back)
4
support(verb, state, show, secure, back)
2
attest(verb, state, show, sign, approve)
2
bear out(verb, expression, phrasal verb, show, sign)
2
show(confirm, appear, swear, testify)
2
substantiate(verb, show, confirm, appear)
2
swear(show, confirm, appear, testify)
2
uphold(verb, state, show, approve, confirm)
1
announce(verb, state, show, sign, confirm)
1
argue(verb, state, show, sign, confirm)
1
assert(verb, show, confirm, appear)
1
bear witness(verb, expression, state, show, sign)
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APASmart Define. (2015). countersign thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/countersign/thesaurus/synonyms
ChicagoSmart Define. 2015. "countersign thesaurus" https://smartdefine.org/countersign/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, countersign thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/countersign/thesaurus/synonyms>.
MLASmart Define. "countersign thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/countersign/thesaurus/synonyms>