First, you have to understand what is understood by Theatre of the Absurd.
The basic elements are, that life is meaningless (so don't expect meaningful emotions, or meaningful relationships between people): instead, the action is play for extremes, with broad comedy mixed with horrific or tragic images; the characters in the play are caught in hopeless situations forced to do repetitive or meaningless actions, or nothing!; the dialogue is full of clichés, and even just nonsense; the plots can seem to go round in circles, going nowhere, or suddenly branch off into something absurdly expansive; and hence, the idea of any 'development' of plot or character, and so even the concept of the well-made/well-written play is dispensed with, so don't expect an ending that brings it to a 'meaningful close'.
Then - see which of these elements are in Thirst. Just look at the play! It opens with three survivors in a life raft of a ship that has gone down, many days adrift, out of water to drink, and surrounded by sharks. The three characters are “A Gentleman,” still in his formal evening clothes ; “A Dancer,” dressed in a short-skirted costume of black velvet covered with spangles”; and a West Indian mulatto crew member who opens the play by singing some monotonous negro song to himself while the fins of sharks endlessly circle the boat. The only other thing the negro utters in the whole play is, “I have no water” and “I do not know.”
What more can you find!?
(My favourite is one of Ionesco's, The Bald Prima Donna )
Interested in Language