217 entries under verb topic. ×

2
assert(show, confirm, prove, appear)
2
autograph
2
avow(state, confirm, verify)
2
betoken(state, sign, endorse, appear)
2
check out(expression, support, back, idea)
2
cosign
2
debunk(support, show, back, sign)
2
depose(state, sign, endorse, appear)
2
detail
2
determine
2
empower
2
ensure(settle, guarantee)
2
evidence(support, show, establish, true)
2
explain(support, show, determine, back)
2
illustrate
2
indicate(state, show, sign, display)
2
okay(support, state, praise, favor)
2
rubber-stamp(support, state, praise, favor)
2
say amen to(expression, idiom, sign)
2
second(support, favor, back, approve)
11 years ago|8.9k views|share |citing 
APASmart Define. (2015). authenticate thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/authenticate/thesaurus/synonyms
ChicagoSmart Define. 2015. "authenticate thesaurus" https://smartdefine.org/authenticate/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, authenticate thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/authenticate/thesaurus/synonyms>.
MLASmart Define. "authenticate thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/authenticate/thesaurus/synonyms>