24 entries under explain topic. ×

8
corroborate(verb, support, back, sign, uphold)
7
bear out(verb, expression, phrasal verb, support, back)
3
subscribe(verb, support, back, sign, uphold)
3
substantiate(verb, support, back, sign)
2
attest(verb, support, back, sign, uphold)
2
authenticate(verb, support, back, sign)
2
circumstantiate(verb, support, back, sign, uphold)
2
debunk(verb, support, back, sign, uphold)
2
give green light(expression, idiom, support, back, sign)
2
give high sign(expression, idiom, support, back, sign)
2
justify(verb, support, back, sign)
2
vouch(verb, support, back, sign, uphold)
2
warrant(verb, support, back, sign, uphold)
2
witness(verb, support, back, sign, uphold)
1
check(verb, support, back, uphold)
1
double-check(verb, support, back, uphold)
1
lap up(expression, support, back, sign, uphold)
1
make good(expression, support, back, sign, uphold)
1
make sure(expression, support, back, sign, uphold)
1
prove(verb, support, back, verify)
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APASmart Define. (2015). underpin thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underpin/thesaurus/synonyms
ChicagoSmart Define. 2015. "underpin thesaurus" https://smartdefine.org/underpin/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underpin thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underpin/thesaurus/synonyms>.
MLASmart Define. "underpin thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/underpin/thesaurus/synonyms>