Synonyms|118Antonyms|2|Broader|0Narrower|0Related|10
1
incorrigible(adjective, normal, even, rigid, inflexible)
1
indefeasible
1
intent(adjective, certain, limited, definite, inflexible)
1
intransmutable
1
inveterate(adjective, certain, limited, definite, inflexible)
1
ironclad
1
irretrievable
1
irrevocable
1
lasting
1
level(adjective, certain, limited, definite, even)
1
limited(adjective, certain, definite, inflexible, restricted)
1
monolithic(adjective, normal, even, rigid, inflexible)
1
narrow(adjective, certain, limited, definite, inflexible)
1
never-failing(adjective, firm, certain, limited, definite)
1
noble
1
nonreturnable
1
normal(adjective, even, rigid, inflexible, reliable)
1
of a piece(expression, adjective, idiom, even, rigid)
1
ordered(adjective, normal, even, rigid, inflexible)
1
ossified(adjective, normal, even, rigid, inflexible)
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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>