1. (adj)commutable subject to alteration or change Synonyms: substitutable Antonyms: inconvertible, unalterable, unexchangeable, untransmutable, incommutable
2. (adj)commutable, substitutable capable of being exchanged for another or for something else that is equivalent Synonyms: substitutable, commutable Antonyms: incommutable, unalterable, unexchangeable, untransmutable, inconvertible