到不行 Traditional form: 到不行 Pinyin (reading): dàobùxíng Definitions: extremely incredibly Characters: 到 - to go to, to arrive 不 - no, not, un-; negative prefix 行 - to go, to walk, to move; professional Traditional characters: 到 - to go to, to arrive 不 - no, not, un-; negative prefix 行 - to go, to walk, to move; professional