66 entries under sturdy topic. ×

1
liege(adjective, firm, solid, true, fast)
1
loyal(adjective, close, strong, correct, firm)
1
never-failing(adjective, set, clear, firm, solid)
1
single-minded(adjective, severe, firm, harsh, solid)
1
unqualified(adjective, set, clear, firm, solid)
1
unquestioning(adjective, set, clear, firm, solid)
0
calm(adjective, firm, solid, steady, stable)
0
cool(adjective, firm, solid, stable, fixed)
0
imperturbable(adjective, calm, smooth, firm, solid)
0
intense(adjective, firm, harsh, solid, cruel)
0
levelheaded(adjective, firm, solid, stable, fixed)
0
patterned(adjective, firm, solid, substantial, stable)
0
poised(adjective, firm, solid, steady, stable)
0
reserved(adjective, firm, solid, stable, fixed)
0
safe(adjective, firm, solid, steady, stable)
0
sedate(adjective, severe, firm, solid, stable)
0
self-possessed(adjective, firm, solid, stable, fixed)
0
sensible(adjective, firm, solid, stable, fixed)
0
serene(adjective, calm, firm, solid, stable)
0
serious-minded(adjective, firm, solid, stable, fixed)
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APASmart Define. (2015). unchanging thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unchanging/thesaurus/synonyms
ChicagoSmart Define. 2015. "unchanging thesaurus" https://smartdefine.org/unchanging/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unchanging thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unchanging/thesaurus/synonyms>.
MLASmart Define. "unchanging thesaurus" 10 November 2015. Web. 27 September 2026. <https://smartdefine.org/unchanging/thesaurus/synonyms>