1
authorize(approve, confirm, sanction, endorse, prove)
1
avert(verb, support, maintain, back, declare)
1
back down(verb, expression, phrasal verb)
1
back off(verb, expression, phrasal verb)
1
be answerable for(verb, support, favor, sustain, confirm)
1
be behind(expression, idiom, approve, sanction, endorse)
1
be incarnate(realize, appear, happen, arrive, unfold)
1
be realized(realize, appear, happen, arrive, unfold)
1
be responsible for(verb, support, maintain, back, declare)
1
bear testimony(verb, expression, support, maintain, back)
1
become concrete(expression, realize, appear, happen, arrive)
1
become real(expression, realize, appear, happen, arrive)
1
become visual(expression, realize, appear, happen, arrive)
1
bind(approve, sanction, endorse)
1
bless(verb, support, back, sign, approve)
1
boost(verb, hold, help, establish, back)
1
boost morale(verb, expression, hold, help, maintain)
1
brace(verb, support, increase, establish, extend)
1
brief(verb, support, favor, sustain, confirm)
1
bring to test(expression, idiom)
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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>