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

55 entries under strong topic. ×

4
fast(adjective, calm, solid, fixed)
4
set(adjective, calm, secure, firm)
4
tough(adjective, calm, rough, solid)
3
equable(adjective, calm, secure, firm)
3
persisting(adjective, firm, determined, bold)
3
secure(calm, steady, substantial, fixed)
3
unfluctuating(adjective, calm, secure, firm)
2
balanced(calm, solid, steady, substantial)
2
perdurable(calm, solid, substantial, constant)
2
relentless(adjective, set, hard, firm)
2
solid(calm, steady, fixed, even)
2
stationary(calm, solid, substantial, fixed)
2
staunch(adjective, calm, secure, firm)
2
sure(calm, solid, steady, even)
1
anchored(calm, solid, steady, even)
1
brick-wall(calm, solid, steady, substantial)
1
calm(solid, steady, substantial, even)
1
deep-rooted(calm, solid, steady, substantial)
1
fixed resistant(expression, calm, solid, substantial)
1
nailed(calm, solid, steady, even)
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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>