66 entries under sturdy topic. ×

5
secure(adjective, set, strong, firm, solid)
4
calm(adjective, firm, sensible, solid, house)
4
staunch(adjective, strong, flat, firm, sensible)
4
unchangeable(adjective, strong, flat, firm, solid)
4
unchanging(adjective, strong, firm, solid, determined)
3
even(adjective, firm, solid, stable, fixed)
3
solid(adjective, strong, secure, easy, firm)
3
unvarying(adjective, firm, solid, stable, fixed)
2
changeless(adjective, firm, solid, certain, stable)
2
cool(adjective, firm, sensible, solid, certain)
2
loyal(adjective, strong, firm, sensible, solid)
2
poised(verb, adjective, firm, sensible, solid)
2
reliable(adjective, strong, easy, firm, sensible)
2
sedate(adjective, firm, sensible, solid, steady)
2
sensible(adjective, firm, solid, steady, stable)
2
sober(adjective, firm, sensible, solid, steady)
2
staid(adjective, set, firm, sensible, solid)
2
unfaltering(adjective, firm, solid, intense, certain)
2
unqualified(adjective, strong, flat, firm, solid)
2
unshaken(adjective, strong, flat, firm, solid)
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APASmart Define. (2016). settled thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/settled/thesaurus/synonyms
ChicagoSmart Define. 2016. "settled thesaurus" https://smartdefine.org/settled/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, settled thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/settled/thesaurus/synonyms>.
MLASmart Define. "settled thesaurus" 27 March 2016. Web. 23 September 2026. <https://smartdefine.org/settled/thesaurus/synonyms>