6
hardihood(noun, drive, energy, spirit, resolve)
6
impertinence(noun, spirit, face, rudeness, courage)
6
safeguard(noun, verb, charge, cover, care)
6
word of honor(noun, expression, idiom, agreement, contract)
5
absolutely
5
asseveration(charge, report, account, declaration, affirmation)
5
assuredly
5
authority(noun, credibility)
5
brass(noun, spirit, face, rudeness, courage)
5
brightness(noun, confidence, hopefulness, sanguinity)
5
buoyancy(noun, happiness, enthusiasm, trust, confidence)
5
cheer(noun, support, happiness, comfort, enthusiasm)
5
cheerfulness(noun, confidence, hopefulness, sanguinity)
5
chutzpah(noun, spirit, face, rudeness, courage)
5
cockiness(noun, face, disrespect, pride, guts)
5
conceit(noun, pride, vanity, egotism, selfishness)
5
confirmation(noun, impression, impress, stamp, affirmation)
5
definitely
5
easiness(noun, happiness, enthusiasm, trust, confidence)
5
equanimity(noun, calm, temper, confidence, grace)
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APASmart Define. (2016). assurance thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/assurance/thesaurus/synonyms
ChicagoSmart Define. 2016. "assurance thesaurus" https://smartdefine.org/assurance/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, assurance thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/assurance/thesaurus/synonyms>.
MLASmart Define. "assurance thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/assurance/thesaurus/synonyms>