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

76 entries under even topic. ×

2
staunch(adjective, calm, strong, secure, firm)
2
straight(adjective, rigid, inflexible, reliable)
2
sure(calm, strong, solid, steady)
2
systematic(adjective, rigid, inflexible, reliable)
2
unbroken(adjective, dull, steady, stable, regular)
2
undiversified(adjective, set, regular, constant)
1
anchored(calm, strong, solid, steady)
1
brick-wall(calm, strong, solid, steady, substantial)
1
calm(strong, solid, steady, substantial)
1
deep-rooted(calm, strong, solid, steady, substantial)
1
fated(adjective, fixed, rigid, inflexible)
1
habitual(adjective, dull, steady, stable, regular)
1
nailed(calm, strong, solid, steady)
1
poised(calm, strong, solid, steady, substantial)
1
reliable(adjective, calm, strong, secure, firm)
1
safe(calm, strong, solid, steady, substantial)
1
sound(calm, strong, steady, constant)
1
stabile(adjective, calm, strong, secure, firm)
1
stalwart(calm, strong, solid, steady, substantial)
1
stout(calm, strong, solid, steady, substantial)
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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>