不当 Traditional form: 不當 Pinyin (reading): bùdàng Definitions: unsuitable; improper; inappropriate Characters: 不 - no, not, un-; negative prefix 当 - appropriate, timely; to act, to serve; the sound of bells Traditional characters: 不 - no, not, un-; negative prefix 當 - appropriate, timely; to act, to serve; the sound of bells