Absurd

Absurd can refer to several different things:
 Absurdity, very poor reasoning; ridiculous, or nonsense
 Absurdism, a philosophy about how the human search some meaning in the universe and the impossibility of finding that meaning
 Absurd or surreal humour
 Absurd (band), a German heavy-metal band
 Absurd, a term used in logic to describe a contradiction
 Reductio ad absurdum, a type of logical argument