The term 'scolding syllable' refers to two distinct sounds that are used to express disapproval or disappointment. The first sound is 'TUT, ' which is a short, sharp sound made with the tongue against the roof of the mouth. The second sound is 'TSK, ' which is a longer, drawn-out sound made with the tongue against the teeth. Both of these sounds are commonly used to express disapproval or disappointment in a variety of contexts.