85 entries under inflexible topic. ×

11
unalterable(adjective, changeable, flexible)
9
unchangeable(adjective, certain, limited, definite, fixed)
8
fixed(adjective, set, hard, regular, rigid)
8
invariable(adjective, flexible, changing)
7
immutable(adjective, flexible)
4
changeless(adjective, set, certain, limited, definite)
4
ironclad(adjective, flexible)
4
steadfast(adjective, certain, limited, definite, fixed)
4
steady(adjective, certain, limited, definite)
3
indomitable
3
obstinate
3
relentless
3
resolute
3
rigid(adjective, flexible)
3
set(adjective, certain, limited, definite, constant)
3
unrelenting
2
determinate(adjective, certain, limited, definite)
2
dogged
2
enduring(adjective, certain, limited, definite)
2
firm(adjective, certain, limited, definite, fixed)
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APASmart Define. (2015). inalterable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/inalterable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inalterable thesaurus" https://smartdefine.org/inalterable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, inalterable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/inalterable/thesaurus/synonyms>.
MLASmart Define. "inalterable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/inalterable/thesaurus/synonyms>