Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
substitutable is an adjective meaning "(of words) interchangeable in a given context without changing the import of the expression". It carries 2 recorded senses.
(of words) interchangeable in a given context without changing the import of the expression
capable of being exchanged for another or for something else that is equivalent
Definitions, synonyms and semantic relations for substitutable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.