idiotic

adj. stupid, ridiculous, senseless, foolish

Idiot is a word derived from the Greek , idiōtēs ("person lacking professional skill," "a private citizen," "individual"), from , idios ("private," "one's own"). In Latin the word idiota ("ordinary person, layman") preceded the Late Latin meaning "uneducated or ignorant person." Its modern meaning and form dates back to Middle English around the year 1300, from the Old French idiote ("uneducated or ignorant person"). The related word idiocy dates to 1487 and may have been analogously modeled on the words prophet and prophecy. The word has cognates in many other languages.
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Adjective
1. insanely irresponsible; "an idiotic idea"
(synonym) crackbrained
(similar) insane
2. completely devoid of wisdom or good sense; "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 turn back the pages of history"; "her conceited assumption of universal interest in her rather dull children was ridiculous"
(synonym) absurd, cockeyed, derisory, laughable, ludicrous, nonsensical, preposterous, ridiculous
(similar) foolish
3. having a mental age of three to seven years
(synonym) imbecile, imbecilic
(similar) unintelligent, stupid

(a.)
Alt. of Idiotical
  

adj.
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