45 entries under expression topic. ×

6
sworn statement(noun, promise, pledge, declaration)
4
green light(noun, support, favor, approval)
3
stamp of approval(noun, idiom, statement, proof)
2
go ahead(proof, verification, endorsement, substantiation)
1
authorizing document(permit, warrant, document, license)
1
be sure(verb, idiom)
1
hypothesis ad hoc
1
instrument in proof
1
pat on back(idiom, authorization, commendation, backing)
1
seal of approval(noun, idiom, support, favor)
1
smoking gun(noun, information, mark, sign)
1
solemn word(noun, assurance, promise)
1
statement under oath
1
subscription to(authorization, commendation, confirmation, backing)
1
word of honor(noun, idiom, support, agreement)
0
airtight case(reason, case, account, explanation)
0
be certain
0
blow by blow(idiom, charge, assurance, assertion)
0
confession of faith(idiom, assent)
0
confirm on(verb, phrasal verb)
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APASmart Define. (2016). affirmation thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/affirmation/thesaurus/synonyms
ChicagoSmart Define. 2016. "affirmation thesaurus" https://smartdefine.org/affirmation/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, affirmation thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/affirmation/thesaurus/synonyms>.
MLASmart Define. "affirmation thesaurus" 15 February 2016. Web. 20 September 2026. <https://smartdefine.org/affirmation/thesaurus/synonyms>