Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
incommutable is an adjective meaning "not subject to alteration or change". It carries 2 recorded senses.
not subject to alteration or change
not interchangeable or able to substitute one for another
“a rare incommutable skill”
Definitions, synonyms and semantic relations for incommutable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.