Synonyms|673Antonyms|118|Broader|13Narrower|17Related|401

173 entries under support topic. ×

4
sanction(noun, verb, back, sign)
4
settle(verb, show, determine, back)
3
assure(verb, maintain, back, declare)
3
attest to(verb, expression, phrasal verb, maintain)
3
check out(verb, expression, phrasal verb, back)
3
circumstantiate(verb, determine, back, sign)
3
claim(maintain, favor, defend, uphold)
3
explain(verb, show, determine, favor)
3
subscribe(verb, back, sign, explain)
2
asseverate(verb, maintain, back, declare)
2
contend(verb, maintain, favor, back)
2
debunk(verb, back, sign, idea)
2
double-check(verb, back, confirm, explain)
2
excuse(noun, verb, maintain, favor)
2
get behind(verb, expression, hold, help)
2
give high sign(expression, idiom, back, sign)
2
legalize(verb, favor, sustain, confirm)
2
legitimize(verb, favor, sustain, confirm)
2
okay(verb, maintain, back, declare)
2
rubber-stamp(verb, maintain, back, declare)
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APASmart Define. (2015). substantiate thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>