Showing disapproval can take many forms, from verbal expressions to physical gestures. Sneered, BOOED, HISSED, hooted, tsked, and CENSURED are all words that describe different ways of expressing disapproval. Sneering is a facial expression that conveys contempt or scorn. Booing is a loud, jeering sound made to express disapproval. Hissing is a sharp, sibilant sound made to show disapproval. Hooting is a loud, prolonged sound made to express disapproval. Tsked is an expression of disapproval made by clicking the tongue. Censuring is a formal expression of strong disapproval.