tut-tut I. variant of tut II. \ˈtətˈtət\intransitive verb (tut-tutted ; tut-tutted ; tut-tutting ; tut-tutts) Etymology:tut-tut, interjection : to express disapproval or disbelief by or as if by uttering tut < busy tut-tutting about how unfair and unequal society had become — L.B.Lindsey >