Synonyms|406Antonyms|94|Broader|3Narrower|0Related|581

72 entries under firm topic. ×

4
sure(adjective, clear, solid, certain)
3
equable(adjective, smooth, right, solid)
3
even(adjective, smooth, right, solid)
3
settled(adjective, solid, certain, stable)
3
unfaltering(adjective, clear, solid, certain)
3
unwavering(adjective, clear, solid, certain)
2
certain(adjective, solid, stable, limited)
2
staunch(adjective, solid, stable, fixed)
2
unfluctuating(adjective, smooth, right, solid)
2
unswerving(adjective, solid, stable, fixed)
1
adamant(adjective, severe, harsh, solid)
1
inexorable(adjective, severe, harsh, solid)
1
never-failing(adjective, clear, solid, certain)
1
obdurate(adjective, severe, harsh, solid)
1
set in stone(expression, adjective, idiom, set)
1
single-minded(adjective, severe, harsh, solid)
1
stabile(adjective, smooth, right, solid)
1
staid(adjective, solid, stable, fixed)
1
unqualified(adjective, clear, solid, certain)
1
unquestioning(adjective, set, clear, solid)
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ChicagoSmart Define. 2015. "changeless thesaurus" https://smartdefine.org/changeless/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, changeless thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/changeless/thesaurus/synonyms>.
MLASmart Define. "changeless thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/changeless/thesaurus/synonyms>