1
attested
1
balanced(adjective, strong, easy, solid, certain)
1
beyond dispute
1
beyond doubt(expression, adjective, set, solid, certain)
1
carefree(adjective, strong, easy, solid, certain)
1
certain(adjective, strong, easy, solid, definite)
1
certified
1
cinch(verb, adjective, strong, easy, solid)
1
cinched(verb, adjective, clear, simple, plain)
1
clear-cut(adjective, clear, simple, correct, plain)
1
clinched(adjective, set, solid, certain, sure)
1
conclusive(adjective, clear, strong, simple, easy)
1
confirmed(adjective, set, solid, certain, sure)
1
definite(adjective, strong, correct, easy, solid)
1
definitive(adjective, last, decisive, final, authoritative)
1
dependable(adjective, set, solid, certain, sure)
1
determinate
1
downright(adjective, correct, precise, specific, explicit)
1
easy(adjective, clear, strong, simple, plain)
1
ensured(adjective, set, solid, certain, sure)
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APASmart Define. (2015). nailed down thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/nailed_down/thesaurus/synonyms
ChicagoSmart Define. 2015. "nailed down thesaurus" https://smartdefine.org/nailed_down/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, nailed down thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/nailed_down/thesaurus/synonyms>.
MLASmart Define. "nailed down thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/nailed_down/thesaurus/synonyms>