不成 Traditional form: 不成 Pinyin (reading): bùchéng Definitions: won't do unable to (at the end of a rhetorical question) can that be? Characters: 不 - no, not, un-; negative prefix 成 - to accomplish; to become; to complete, to finish; to succeed Traditional characters: 不 - no, not, un-; negative prefix 成 - to accomplish; to become; to complete, to finish; to succeed