66 entries under sturdy topic. ×

2
certain(adjective, firm, solid, stable, fixed)
2
changeless(adjective, smooth, right, firm, solid)
2
fixed(adjective, dull, strong, secure, firm)
2
resolute(adjective, calm, strong, secure, firm)
2
set(adjective, calm, strong, secure, firm)
2
unchangeable(adjective, calm, strong, secure, firm)
2
unwavering(adjective, calm, strong, direct, secure)
1
abiding(adjective, calm, strong, secure, firm)
1
brick-wall(adjective, calm, strong, secure, firm)
1
immovable(adjective, strong, secure, firm, solid)
1
imperturbable(adjective, calm, smooth, firm, solid)
1
poised(adjective, calm, strong, secure, firm)
1
reliable(adjective, calm, strong, secure, firm)
1
safe(adjective, calm, strong, secure, firm)
1
secure(adjective, calm, strong, firm, solid)
1
set in stone(expression, adjective, idiom, calm, strong)
1
solid(adjective, calm, strong, firm, fast)
1
solid as a rock(expression, adjective, idiom, calm, strong)
1
staunch(adjective, calm, strong, secure, firm)
1
steady-going(adjective, firm, solid, steady, substantial)
13 years ago|1.1k views|share |citing 
APASmart Define. (2013). unfluctuating thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unfluctuating/thesaurus/synonyms
ChicagoSmart Define. 2013. "unfluctuating thesaurus" https://smartdefine.org/unfluctuating/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, unfluctuating thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unfluctuating/thesaurus/synonyms>.
MLASmart Define. "unfluctuating thesaurus" 28 June 2013. Web. 30 September 2026. <https://smartdefine.org/unfluctuating/thesaurus/synonyms>