2
steady(certain, unquestionable, undisputable)
2
sure-fire(adjective, certain, definite, sure, flawless)
2
unexceptionable
2
unfailing(adjective, certain, flawless, unquestionable, undisputable)
2
vowed(verb, promised)
1
absolutely certain(expression, adjective, set, solid, certain)
1
affianced
1
attempted
1
bankrolled
1
barred
1
betrothed
1
beyond doubt(expression, adjective, set, solid, certain)
1
bolted
1
certainly
1
checked
1
cinched(adjective, set, clear, simple, plain)
1
clear-cut(adjective, set, clear, simple, plain)
1
clinched(adjective, set, solid, certain, sure)
1
compromised
1
conclusive(clear, simple, plain, certain, straightforward)
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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>