tat You can use tat to refer to ornaments, used goods, cheap clothes, or other items which you think are cheap and of bad quality. (BRIT) INFORMAL n-uncount ...souvenir shops selling an astounding variety of tat.
rat-a-tat
You use rat-a-tat to represent a series of sharp, repeated sounds, for example the sound of someone knocking at a door. n-sing; sound
...the rat-a-tat at the door.
tit-for-tat
A tit-for-tat action is one where someone takes revenge on another person for what they have done by doing something similar to them. adj usu ADJ n
The two countries have each expelled another diplomat following a round of tit-for-tat expulsions.