Synonyms|216Antonyms|49|Broader|12Narrower|0Related|56

63 entries under support topic. ×

3
substantiate(verb, back, sign, explain)
2
attest(verb, back, sign, uphold)
2
authenticate(verb, back, sign, explain)
2
bear up(expression, hold, reinforce)
2
circumstantiate(verb, back, sign, uphold)
2
debunk(verb, back, sign, uphold)
2
establish(verb, back, rest, base)
2
explain(verb, back, sign, uphold)
2
fortify(verb, strengthen, reinforce, buttress)
2
give green light(expression, idiom, back, sign)
2
give high sign(expression, idiom, back, sign)
2
justify(verb, back, sign, explain)
2
rest(verb, base, provide, reinforce)
2
strengthen(verb, hold, reinforce, buttress)
2
vouch(verb, back, sign, uphold)
2
warrant(verb, back, sign, uphold)
2
witness(verb, back, sign, uphold)
1
affirm(verb, back, sign, uphold)
1
approve(verb, back, sign, prove)
1
bless(verb, back, sign, uphold)
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ChicagoSmart Define. 2015. "underpin thesaurus" https://smartdefine.org/underpin/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, underpin thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/underpin/thesaurus/synonyms>.
MLASmart Define. "underpin thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/underpin/thesaurus/synonyms>