Synonyms|239Antonyms|51|Broader|0Narrower|0Related|53

57 entries under adjective topic. ×

1
foolproof
1
guaranteed(set, firm, solid, certain)
1
in the bag(expression, idiom, solid, certain)
1
inevitable(certain, unquestionable, undisputable)
1
insured(set, solid, certain, sure)
1
irrefutable(solid, certain, sure, confident)
1
made certain(expression, set, solid, certain)
1
nailed down(expression, solid, certain, sure)
1
on ice(expression, set, solid, certain)
1
positive(certain, sure, unquestionable, guaranteed)
1
pronounced(set, solid, certain, sure)
1
racked(set, solid, certain, sure)
1
safe
1
sealed(set, firm, solid, certain)
1
set(solid, certain, definite, sure)
1
settled(set, solid, certain, sure)
1
sewed up(expression, set, solid, certain)
1
sure thing(noun, expression, belief, store)
1
undisputable(certain, unquestionable, undeniable, cincher)
1
undoubted(solid, certain, sure, confident)
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ChicagoSmart Define. 2015. "surefire thesaurus" https://smartdefine.org/surefire/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, surefire thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/surefire/thesaurus/synonyms>.
MLASmart Define. "surefire thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/surefire/thesaurus/synonyms>