DISAPPROVING SOUNDS are a type of nonverbal communication used to express disapproval or dissatisfaction. Common examples include BOOS (4 letters), tsktsk (6 letters), CLUCKS (6 letters), TUTS (4 letters), tsks (4 letters), and groans (6 letters). BOOS are loud, negative sounds made in response to something disliked or disapproved of. Tsktsk is an expression of disapproval or disappointment, usually made with the tongue against the teeth. CLUCKS are short, low-pitched sounds made with the tongue to express disapproval or disappointment. TUTS are short, sharp sounds made with the tongue to express disapproval or dissatisfaction. Tsks are similar to TUTS, but are slightly softer and more drawn out. Groans are long, low-pitched sounds made to express disapproval or dissatisfaction.