不痛不癢 [ㄅㄨˋ ㄊㄨㄥˋ ㄅㄨˋ ㄧㄤˇ; bu4 tong4 bu4 yang3] lit. doesn't hurt, doesn't tickle (idiom); sth is wrong, but not quite sure what fig. not getting to any matter of substance scratching the surface superficial perfunctory ◄ ►