1
agreed(adjective, certain, limited, definite, inflexible)
1
arranged(adjective, certain, limited, definite, inflexible)
1
certain(adjective, limited, definite, inflexible, restricted)
1
circumscribed(adjective, certain, limited, definite, inflexible)
1
compatible(adjective, normal, even, rigid, inflexible)
1
confirmed(adjective, certain, limited, definite, inflexible)
1
consistent(adjective, set, regular, fixed, even)
1
consonant(adjective, normal, even, rigid, inflexible)
1
decided(adjective, certain, limited, definite, inflexible)
1
defined(adjective, certain, limited, definite, inflexible)
1
definite(adjective, certain, limited, inflexible, restricted)
1
definitive(adjective, certain, limited, definite, inflexible)
1
enduring(adjective, certain, limited, definite, inflexible)
1
fated(adjective, normal, even, rigid, inflexible)
1
fateful(adjective, normal, even, rigid, inflexible)
1
firm(adjective, secure, certain, steady, limited)
1
habitual(adjective, even, constant, rigid, inflexible)
1
in the bag(expression, adjective, idiom, certain, limited)
1
incommutable
1
inconvertible
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APASmart Define. (2015). unmodifiable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unmodifiable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unmodifiable thesaurus" https://smartdefine.org/unmodifiable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unmodifiable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unmodifiable/thesaurus/synonyms>.
MLASmart Define. "unmodifiable thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unmodifiable/thesaurus/synonyms>