202 entries under adjective topic. ×

2
smooth(even, unchanging, unbroken, undeviating)
2
static(set, regular, fixed, even)
2
staunch(calm, strong, secure, firm)
2
straight(even, rigid, inflexible, reliable)
2
sustained(persistent, continuous, endless, relentless)
2
systematic(even, rigid, inflexible, reliable)
2
tireless
2
unadaptable(set, hard, stiff, rigid)
2
unbroken(dull, steady, stable, regular)
2
undiversified(set, regular, even, constant)
2
uninterrupted(dull, steady, stable, regular)
2
unrelenting(set, hard, stiff, persistent)
2
unremitting(persistent, constant, continuous, endless)
2
untiring
1
arbitrary(hard, severe, rough, harsh)
1
carved in stone
1
confirmed(hard, severe, rough, harsh)
1
connected(dull, steady, stable, regular)
1
dauntless
1
dedicated
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APASmart Define. (2015). immutable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/immutable/thesaurus/synonyms
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>