Definition of "Absurd" :

noun: a situation in which life seems irrational and meaningless

"The absurd is the essential concept and the first truth."

adjective: inconsistent with reason or logic or common sense

"The absurd predicament of seeming to argue that virtue is highly desirable but intensely unpleasant."

adjective: so unreasonable as to invite derision

"The absurd excuse that the dog ate his homework."