Hisses, which is six letters long, is a sound made to express disapproval or displeasure. TSKs, which is four letters long, is an expression of disapproval or disappointment. Discountenances, which is fifteen letters long, is a facial expression that conveys disapproval or displeasure. Frowns, which is six letters long, is a facial expression that conveys disapproval or displeasure. Tuttuts, which is seven letters long, is an expression of disapproval or disappointment. DISCOUNTENANCE, which is fourteen letters long, is a verb meaning to show disapproval or displeasure. All of these words are used to show disapproval and can be used to summarize the term 'Shows Disapproval'.