An absurdity is a thing that is extremely unreasonable, so as to be foolish

Foolish

Foolish may refer to:* the derived term Foolishness* "Foolish" * "Foolish" * "Foolish", a song by Tyler James * Foolish , an album by Superchunk* Foolish , a 1999 film...

 or not taken serious

Serious

"Serious" is the 22nd single by Duran Duran. It was released 1 October 1990 as the second single from the Liberty album.-About the song:By the time the single was released, interest in the Liberty album had already waned. Poor promotion, including a decision not to tour in support of the album,...

ly, or the state of being so. "Absurd" is an adjective used to describe an absurdity, e.g., “this encyclopedia article is absurd”. It derives from the Latin absurdusm meaning "out of tune", hence irrational. The Latin surdus means deaf, implying stupidity

Stupidity

Stupidity is a lack of intelligence, understanding, reason, wit, or sense. It may be innate, assumed, or reactive - 'being "stupid with grief" as a defence against trauma', a state marked with 'grief and despair...making even simple daily tasks a hardship'....

. Absurdity is contrasted with seriousness

Seriousness

Seriousness is an attiude of gravity, solemnity, persistence, and earnestness toward something considered to be of importance....

 in reasoning.