When repeated, it might accompany a finger wag

Usage examples of tsk.

Shannon took her time looking Tanny over from head to toe, tsked, and shook her head.

As he got to his feet, he began to black out again, and Gesten tsked at him as he sat abruptly back down.

She made a tsking sound and whipped out a pair of sunglasses from her denim jacket pocket, placing them on her nose.

The chairman put a hooked claw to his lips and made a little tsking sound.