1
unalterable(calm, strong, solid, certain, steady)
1
unchangeable(calm, strong, solid, steady, substantial)
1
unfluctuating(adjective, calm, strong, secure, solid)
1
uniform(calm, strong, solid, steady, substantial)
1
unmovable(adjective, still, fixed, rigid, inflexible)
1
unmoving(strong, secure, still, substantial, stable)
1
unvarying(calm, strong, solid, steady, substantial)
1
unwavering(calm, strong, solid, steady, even)
1
well-built(adjective, calm, strong, solid, steady)
1
well-founded(calm, strong, secure, solid, steady)
0
absolute
0
assured
0
at rest(expression, adjective, still, fixed, stationary)
0
barbed
0
battered
0
braced(strong, secure, substantial, stable, unmoving)
0
captured
0
categorical
0
cemented(strong, secure, substantial, stable, unmoving)
0
certain
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APASmart Define. (2015). nailed thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/nailed/thesaurus/synonyms
ChicagoSmart Define. 2015. "nailed thesaurus" https://smartdefine.org/nailed/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, nailed thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/nailed/thesaurus/synonyms>.
MLASmart Define. "nailed thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/nailed/thesaurus/synonyms>