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Synonyms
fixed, hard-and-fast, immutable, inalterable, inflexible, invariable, unalterable, unchangeable
Antonyms
alterable, changeable, elastic, flexible, mutable, variable
15th century, in the meaning defined above
Middle English, from Latin incommutabilis, from in- + commutabilis commutable
More from Merriam-Webster on incommutable
Rhyming Dictionary: Words that rhyme with incommutable
Thesaurus: All synonyms and antonyms for incommutable
See Definitions and Examples
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