From Longman Dictionary of Contemporary Englishtuttut1 /tʌt/ (also tut-tut) interjection SOUNDthe sound that you make by touching the top of your mouth with your tongue in order to show disapprovaltuttut2 (also tut-tut) verb (tutted, tutting) [intransitive] DISAPPROVEto express disapproval by making a tut sound The nurse rushed in, tutting with irritation.→ See Verb table
Examples from the Corpus
tut• I would tut at people trying to climb in wellingtons, and roll my eyes at those in jeans.tuttut3 noun [uncountable] British English informal 1 unwanted things, things of poor quality, or things that are making a place untidy SYN rubbish My phone is somewhere underneath all this tut on my desk.2 nonsense SYN rubbish He was talking a load of old tut about the house being haunted. 