73 entries under demonstrate 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)
21
prove(verb, support, check, show, maintain)
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
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 21, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>