80 entries under steady topic. ×

1
locked(adjective, strong, secure, solid)
1
nailed(adjective, strong, secure, solid)
1
nerveless(adjective, calm, cool, tranquil)
1
nonchalant(adjective, calm, cool, unaffected)
1
robust(adjective, strong, hard, secure, tough)
1
roll with punches(expression, adjective, idiom, calm, cool)
1
self-possessed(adjective, calm, cool, firm, solid)
1
self-satisfied(adjective, calm, cool, tranquil)
1
smug(adjective, calm, cool, tranquil)
1
sound(adjective, strong, secure, firm, solid)
1
stiff upper lip(expression, adjective, idiom, calm, cool)
1
stoical(adjective, calm, cool, tranquil)
1
thick-skinned(adjective, calm, mean, hard, cool)
1
tough nut(expression, adjective, fixed, stubborn)
1
undisturbed(adjective, calm, cool, tranquil)
1
unexcitable(adjective, calm, cool, unaffected)
1
unfluctuating(adjective, strong, secure, firm, solid)
1
unruffled(adjective, calm, cool, collected)
1
untouched(adjective, calm, cool, tranquil)
0
safe(adjective, strong, secure, firm, solid)
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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>