Synonyms|413Antonyms|159|Broader|4Narrower|0Related|961

102 entries under sure topic. ×

2
valid(clear, complete, material, certain, true)
1
absolutely certain(expression, adjective, solid, certain)
1
authoritative(adjective, clear, sound, correct, right)
1
cinched(adjective, solid, certain, confident)
1
clinched(adjective, solid, certain, confident)
1
concrete(adjective, clear, material, certain, substantial)
1
confirmed(adjective, solid, certain, real)
1
correct(adjective, sound, right, honest, plain)
1
dependable(adjective, correct, right, flat, honest)
1
direct(adjective, clear, correct, right, honest)
1
ensured(adjective, solid, certain, confident)
1
firm(clear, material, certain, definite)
1
guaranteed(adjective, clear, sound, firm, plain)
1
in the bag(expression, adjective, idiom, clear, firm)
1
inerrant(complete, certain, valid, unquestionable)
1
infallible(clear, complete, certain, valid)
1
insured(adjective, solid, certain, confident)
1
made certain(expression, adjective, solid, certain)
1
nailed down(expression, adjective, solid, certain)
1
on ice(expression, adjective, clear, firm, solid)
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APASmart Define. (2016). indubitable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/indubitable/thesaurus/synonyms
ChicagoSmart Define. 2016. "indubitable thesaurus" https://smartdefine.org/indubitable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, indubitable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/indubitable/thesaurus/synonyms>.
MLASmart Define. "indubitable thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/indubitable/thesaurus/synonyms>