Gaafar's suggestion is half correct. I guess the term you need is Farce not Farse. Farse is a very old form of the word that is rarely used nowadays.

Farce can stand for مسرحية هزلية but not عبثية. In literature, that's a total different case. Even هزلية doesn't emply the absolute right meaning, because a farcical play for example is like Shakespeare's Merchant of Venice. The loss of all the ships is farcical, it's not هزلي but too silly to be believed. Portia attending undercover as a man to defend her beloved is farcical, also not هزلي here but rather hard to be accepted.

Farce represents comic as unbelievable events to be accepted by characters in the play and believed in though that would never happen in real life just for the purpose of serving the plot. هزلي isn't even a perfect word here, but it may just work out.

العبثية is an absolute different case. Waiting for Godot by Samuel Beckett belongs to the thatre of absurd or what we call in Arabic المسرح العبثي. It's a play representing total lack of communication in our modern society, the SOS call from lonesome among group. The communion conversations between the characters waiting for Godot expresses "nothing"; it's the way of making "everything" just "nothing", and proving that "nothing" is "everything".

I'd suggest سخرية rather than هزل in this term, as the main purpose isn't to raise laughter, but to serve critical situations; what we call in Arabic sometimes as تمليح أدبي.

About Farse, the only thing I found was :