非...不可 fēi... bùkě must Origin Definitions Defs Strokes Stroke Words Sentences Sents 非 fēi adverb to insist on (colloquial) to insist on; to simply must; often used in the 非...不可 fēi... bùkě pattern to indicate a necessary condition or absolute requirement不可 bùkě auxiliary [necessity] Used in the 非...不可 fēi... bùkě pattern to indicate that something must be done or is unavoidable.