Yes, tsktsks is in the scrabble dictionary.

What does Tsktsks meaning?

Tsktsks meaning

Third-person singular simple present indicative form of tsktsk.

Is Tsk a real word?

(in certain animals) a tooth developed to great length, usually one of a pair, as in the elephant, walrus, and wild boar, but singly in the narwhal. a long, pointed, or protruding tooth.