Synonyms|281Antonyms|24|Broader|5Narrower|0Related|69
1
supported
1
surefire(adjective, set, firm, solid, certain)
1
suretied
1
swore(verb, promised)
1
sworn-to(adjective, promised)
1
tested
1
tried
1
unavoidable(certain, unquestionable, undisputable)
1
undangerous
1
undeniable(clear, simple, plain, certain, straightforward)
1
underwritten
1
undisputable(adjective, certain, unquestionable)
1
undoubted(adjective, clear, hard, sound, firm)
1
unequivocal(clear, certain, valid, unquestionable, undisputable)
1
unerring(clear, certain, flawless, valid, unquestionable)
1
unhazardous
1
unperilous
1
unprecarious
1
unquestionable(adjective, clear, sound, plain, solid)
1
unrisky
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APASmart Define. (2015). guaranteed thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/guaranteed/thesaurus/synonyms
ChicagoSmart Define. 2015. "guaranteed thesaurus" https://smartdefine.org/guaranteed/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, guaranteed thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/guaranteed/thesaurus/synonyms>.
MLASmart Define. "guaranteed thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/guaranteed/thesaurus/synonyms>