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

95 entries under maintain topic. ×

5
vindicate(verb, support, defend, explain)
5
witness(verb, support, show, determine)
4
avow(verb, support, back, declare)
4
clear(verb, support, favor, sustain)
4
defend(verb, support, hold, help)
3
assure(verb, support, back, declare)
3
attest to(verb, expression, phrasal verb, support)
3
claim(support, favor, defend, uphold)
2
asseverate(verb, support, back, declare)
2
contend(verb, support, favor, back)
2
excuse(noun, verb, support, favor)
2
get behind(verb, expression, support, hold, help)
2
okay(verb, support, back, declare)
2
rubber-stamp(verb, support, back, declare)
2
second(verb, hold, help, establish)
2
stand up for(expression, idiom, support, hold, help)
2
vow(verb, support, back, declare)
1
abet(verb, hold, help, establish)
1
absolve(verb, support, favor, sustain)
1
acquit(verb, support, favor, sustain)
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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>