What is "tut-tutting"

Usage examples of "tut-tutting".

One final squeeze of his hand and she was up, brushing down her skirts and tut-tutting over the broken cup.

She unbuttoned his Sea Island cotton shirt and slipped it from his shoulders, tut-tutting at the sight of the four bruises, now turning a fetching blue, that adorned his torso and ribs.

And, everywhere, a prattling camaraderie, a swapping of news and gossip, a making of folksy dates for the shuffle board and the bridge-table, a handing round of letters from children and grandchildren, a tut-tutting about prices in the shops and the motels.

My stepmother dotted, making a tut-tutting sound, and turning to Harold asked, “Have you not been lax with her?