Absurd: incongruous;inviting ridicule; "the absurd excuse that the dog ate his homework"; "that's a cockeyed idea"; "ask a nonsensical question and get a nonsensical answer"; "a contribution so small as to be laughable"; "it is ludicrous to call a cottage a mansion"; "a preposterous attempt to ...
Imbecile: having a mental age of three to seven years
(idiotically) in an idiotic manner; "what arouses the indignation of the honest satirist is not the fact that people in positions of power or influence behave idiotically"
(idiocy) extreme mental retardation
(idiot) a person of subnormal intelligence
An idiot, dolt, or dullard is a mentally deficient person, or someone who acts in a self-defeating or significantly counterproductive way. ...
(Idiot (Athenian democracy)) An idiot in Athenian democracy was someone who was characterized by self-centeredness and concerned almost exclusively with private--as opposed to public--affairs.Parker, Walter C. (v86 n5 p344 Jan 2005). "Teaching Against Idiocy", Bloomington: Phi Delta Kappan. ...
(Idiot (card game)) Shit head is a card game in which the aim is to lose all of one's cards.