I. two alveolar or dental clicks; often read as ˈtət-ˈtət interjection
Date: 1566
: tut
II. ˈtət-ˈtət intransitive verb
( tut-tut·ted ; tut-tut·ting )
Date: 1873
: to express disapproval or disbelief by or as if by uttering tut
editorialists tut-tutted over the recent congressional scandal