160 entries under prove topic. ×

34
corroborate(verb, support, show, increase, present)
32
confirm(verb, support, check, show, increase)
32
verify(verb, support, hold, help, check)
25
validate(verb, support, check, show, determine)
24
authenticate(verb, support, show, determine, establish)
23
support(verb, help, show, increase, maintain)
21
certify(verb, support, show, maintain, determine)
20
affirm(verb, support, show, maintain, determine)
19
establish(verb, support, hold, help, show)
16
attest(verb, support, show, determine, back)
16
bear out(verb, expression, phrasal verb, support, hold)
16
demonstrate(verb, support, check, show, determine)
16
show(verb, support, show, determine, establish)
15
ratify(verb, support, show, determine, back)
14
sustain(verb, support, hold, help, show)
12
manifest(verb, show, determine, character, establish)
11
back(verb, support, hold, help, show)
10
embody(verb, show, character, establish, express)
10
incarnate(verb, show, character, establish, declare)
10
justify(verb, support, hold, help, show)
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APASmart Define. (2015). substantiate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>