(书面语中表示反对、厌烦、同情等的)咂嘴声,啧啧声 Tut is used in writing to represent the sound that you make with your tongue touching the top of your mouth when you want to indicate disapproval, annoyance, or sympathy.
VERB (表示反对、厌烦、同情等时)发啧啧声,咂嘴 If you tut, you make a sound with your tongue touching the top of your mouth when you want to indicate disapproval, annoyance, or sympathy.