Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unchangeable is an adjective meaning "not changeable or subject to change". It carries one recorded sense.
not changeable or subject to change
“a fixed and unchangeable part of the germ plasm”
“the unchangeable seasons”
“one of the unchangeable facts of life”
Definitions, synonyms and semantic relations for unchangeable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.