"Tut-tut" is an onomatopoeic expression used to indicate disapproval, disapproving sounds, or mild irritation. It is often used in a scolding or reprimanding tone, and can sometimes be accompanied by shaking or wagging of the finger.

Here are a few examples of how the term "tut-tut" might be used in context:

• "Tut-tut, you shouldn't say such things about your classmates."
• "When she saw the mess the children had made, she just shook her head and tut-tutted."
• "The teacher gave a tut-tut and pointed out the mistakes in the student's paper."
• "Tut-tut, that's not the proper way to hold a fork."
• "She gave a little tut-tut when she saw the stains on the carpet."
• "Tut-tut, you should have known better than to leave your phone unlocked."
• "The mother gave a stern tut-tut when her child started throwing a tantrum in the store."
• "The boss gave a disappointed tut-tut when she saw the low quality of the work."