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

173 entries under support topic. ×

2
stand up for(expression, idiom, hold, help)
2
underpin(verb, back, sign, explain)
2
vow(verb, maintain, back, declare)
1
absolve(verb, maintain, favor, sustain)
1
acquit(verb, maintain, favor, sustain)
1
act as a witness(verb, expression, idiom, maintain)
1
add(verb, increase, establish, extend)
1
add fuel to fire(verb, expression, idiom, increase)
1
advocate(maintain, defend, uphold, explain)
1
alibi(verb, favor, sustain, confirm)
1
anneal(verb, increase, establish, extend)
1
answer for(expression, back, confirm, legitimize)
1
apologize for(expression, favor, defend, legitimize)
1
argue for(verb, expression, favor, sustain)
1
ascend(verb, increase, establish, extend)
1
avert(verb, maintain, back, declare)
1
be answerable for(verb, favor, sustain, confirm)
1
be responsible for(verb, maintain, back, declare)
1
bear testimony(verb, expression, maintain, back)
1
bless(verb, back, sign, approve)
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APASmart Define. (2015). substantiate thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/substantiate/thesaurus/synonyms
ChicagoSmart Define. 2015. "substantiate thesaurus" https://smartdefine.org/substantiate/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, substantiate thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/substantiate/thesaurus/synonyms>.
MLASmart Define. "substantiate thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/substantiate/thesaurus/synonyms>