Synonyms|468Antonyms|98|Broader|6Narrower|0Related|413

74 entries under fixed topic. ×

3
strong(calm, firm, steady, even)
3
unfluctuating(adjective, calm, strong, secure, firm)
2
continuing(static, unvarying, unchangeable, unalterable)
2
homogeneous(adjective, dull, steady, stable, regular)
2
intransigent(steady, impassive, inflexible, stubborn)
2
of a piece(expression, adjective, idiom, steady, stable)
2
regular(adjective, dull, set, steady, stable)
2
solid(calm, strong, steady, even)
2
static(adjective, set, regular, even)
2
stationary(calm, strong, solid, substantial)
2
unbroken(adjective, dull, steady, stable, regular)
2
unfading(stable, constant, enduring, lasting)
2
unfailing(set, regular, constant, rigid)
2
uninterrupted(adjective, dull, steady, stable, regular)
1
carved in stone
1
connected(adjective, dull, steady, stable, regular)
1
fated(adjective, even, rigid, inflexible)
1
habitual(adjective, dull, steady, stable, regular)
1
imperishable(adjective, stable, constant, enduring)
1
like the Rock of Gibralter(expression, adjective, idiom, steady, stable)
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ChicagoSmart Define. 2015. "immutable thesaurus" https://smartdefine.org/immutable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, immutable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/immutable/thesaurus/synonyms>.
MLASmart Define. "immutable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/immutable/thesaurus/synonyms>