80 entries under steady topic. ×

12
rooted(adjective, strong, secure, solid, usual)
12
unchangeable(adjective, set, hard, secure, firm)
10
set in stone(expression, adjective, idiom, mean, hard)
10
solid(adjective, strong, secure, firm)
9
tenacious(adjective, strong, secure, firm, solid)
8
unmoved(adjective, calm, cool, firm, determined)
7
impassive(adjective, cool, secure, detached)
7
quiescent(adjective, still, stable, fixed)
7
settled(adjective, strong, secure, firm, solid)
7
stuck(adjective, firm, true, fixed)
7
unalterable(adjective, set, hard, regular)
6
anchored(adjective, strong, secure, solid)
6
immutable(adjective, set, hard, regular)
5
immotile(adjective, secure, fixed, rigid)
5
imperturbable(adjective, calm, cool, firm, solid)
4
calm(adjective, cool, firm, solid, still)
4
cool(adjective, calm, firm, solid)
4
persevering(adjective, determined, resolute, persistent)
3
durable(adjective, strong, secure, firm, solid)
3
permanent(adjective, secure, firm, true)
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APASmart Define. (2015). immovable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/immovable/thesaurus/synonyms
ChicagoSmart Define. 2015. "immovable thesaurus" https://smartdefine.org/immovable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, immovable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/immovable/thesaurus/synonyms>.
MLASmart Define. "immovable thesaurus" 3 August 2015. Web. 24 September 2026. <https://smartdefine.org/immovable/thesaurus/synonyms>