Synonyms|441Antonyms|81|Broader|10Narrower|1Related|338

84 entries under substantiate topic. ×

2
give green light(expression, idiom, support, praise, favor)
2
give high sign(expression, idiom, support, back, sign)
2
give stamp of approval(expression, idiom, support, back, sign)
2
give the nod(expression, idiom, support, praise, favor)
2
make legal(noun, expression, endorse, prove, verify)
2
okay(verb, support, state, praise, favor)
2
reinforce
2
rubber-stamp(verb, support, state, praise, favor)
2
second(verb, support, favor, back, approve)
2
sign off on(expression, idiom, support, back, sign)
2
subscribe(verb, support, back, sign, explain)
2
test(verb, show, determine, display, idea)
2
underpin(verb, support, back, sign, explain)
1
John Hancock(expression, endorse, prove, verify)
1
add up(verb, expression, show, determine, confirm)
1
buy(verb, support, back, sign, prove)
1
check on(verb, expression, confirm, story, verify)
1
check up(verb, expression, idea, confirm, prove)
1
constitute(endorse, prove, verify, corroborate)
1
declare true(verb, expression, confirm, story, verify)
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APASmart Define. (2015). authenticate thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/authenticate/thesaurus/synonyms
ChicagoSmart Define. 2015. "authenticate thesaurus" https://smartdefine.org/authenticate/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, authenticate thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/authenticate/thesaurus/synonyms>.
MLASmart Define. "authenticate thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/authenticate/thesaurus/synonyms>