50 entries under authenticate topic. ×

45
confirm(verb, support, state, show, increase)
33
substantiate(verb, support, show, increase, present)
32
verify(verb, support, state, show, maintain)
27
support(verb, show, increase, maintain, establish)
25
validate(verb, support, state, show, determine)
24
certify(verb, support, state, show, maintain)
23
affirm(verb, support, state, show, maintain)
20
prove(verb, support, state, show, maintain)
17
attest(verb, support, state, show, determine)
16
establish(verb, support, show, increase, maintain)
16
ratify(verb, support, show, determine, back)
15
bear out(verb, expression, phrasal verb, support, show)
13
demonstrate(verb, support, state, show, determine)
10
document(verb, show, determine, confirm, explain)
8
justify(verb, support, show, increase, maintain)
7
approve(verb, support, state, back, sign)
7
manifest(verb, show, determine, idea, confirm)
4
check(verb, support, show, determine, back)
3
check out(verb, expression, phrasal verb, support, back)
2
attest to(verb, expression, phrasal verb, support, maintain)
<123>
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APASmart Define. (2015). corroborate thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/corroborate/thesaurus/synonyms
ChicagoSmart Define. 2015. "corroborate thesaurus" https://smartdefine.org/corroborate/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, corroborate thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/corroborate/thesaurus/synonyms>.
MLASmart Define. "corroborate thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/corroborate/thesaurus/synonyms>