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

373 entries under verb topic. ×

1
advocate belief(expression, hold, help, maintain)
1
agree with(expression, hold, help, maintain)
1
aid(hold, help, maintain, establish)
1
alibi(support, favor, sustain, confirm)
1
anneal(support, increase, establish, extend)
1
argue for(expression, support, favor, sustain)
1
ascend(support, increase, establish, extend)
1
assess(check, examine, try, confirm)
1
assist(hold, help, maintain, establish)
1
audit
1
avert(support, maintain, back, declare)
1
back down(expression, phrasal verb)
1
back off(expression, phrasal verb)
1
be answerable for(support, favor, sustain, confirm)
1
be responsible for(support, maintain, back, declare)
1
bear testimony(expression, support, maintain, back)
1
bless(support, back, sign, approve)
1
boost(hold, help, establish, back)
1
boost morale(expression, hold, help, maintain)
1
brace(support, increase, establish, extend)
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APASmart Define. (2015). substantiate thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>