85 entries under inflexible topic. ×

1
set-up(certain, limited, restricted, intent)
1
stated(adjective, certain, limited, definite)
1
staunch
1
stiff
1
still(adjective, certain, limited, definite)
1
stipulated(adjective, certain, limited, definite)
1
strict
1
stringent
1
sure(adjective, certain, limited, definite)
1
unadaptable
1
unbending(adjective, certain, limited, definite)
1
unblinking(adjective, certain, limited, definite)
1
uncompromising
1
undeviating(adjective, certain, limited, definite, constant)
1
unqualified(adjective, certain, limited, definite)
1
unyielding
0
adamantine
0
cast-iron(intent, hard-and-fast)
0
dyed-in-the-wool
0
iron
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APASmart Define. (2015). inalterable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/inalterable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inalterable thesaurus" https://smartdefine.org/inalterable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, inalterable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/inalterable/thesaurus/synonyms>.
MLASmart Define. "inalterable thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/inalterable/thesaurus/synonyms>