preposterous

(prĭ-pŏs'tər-əs)
adj.
Contrary to nature, reason, or common sense; absurd. See synonyms at foolish.

[From Latin praeposterus, inverted, unseasonable : prae-, pre- + posterus, coming behind (from post, behind).]

preposterously pre·pos'ter·ous·ly adv.
preposterousness pre·pos'ter·ous·ness n.

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adjective

1. So senseless as to be laughable: absurd, foolish, harebrained, idiotic, imbecilic, insane, lunatic, mad, moronic, nonsensical, silly, softheaded, tomfool, unearthly, zany. Informal cockeyed, crazy, loony, loopy. Slang balmy², dippy, dopey, jerky, sappy, wacky. See ability/inability, knowledge/ignorance.
2. Beyond all reason: obscene, outrageous, ridiculous, shocking, unconscionable, unreasonable. Idioms: out of bounds, out of sight. See usual/unusual.

adj

Definition: ridiculous, bizarre
Antonyms: reasonable, sensible

For a list of words related to preposterous, see:

• Foolish, Immature, Bigoted, or Trivial

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See words rhyming with "preposterous."

  See crossword solutions for the clue Preposterous.

Dansk (Danish)
adj. - fuldkommen meningsløs, urimelig, latterlig

Nederlands (Dutch)
absurd, ongerijmd

Français (French)
adj. - grotesque, absurde

Deutsch (German)
adj. - absurd, grotesk

Ελληνική (Greek)
adj. - παράλογος, εξωφρενικός

Italiano (Italian)
assurdo, ridicolo, irragionevole

Português (Portuguese)
adj. - prepóstero, absurdo, ridículo

Русский (Russian)
нелепый, бессмысленный

Español (Spanish)
adj. - absurdo, ridículo

Svenska (Swedish)
adj. - befängd, omöjlig, bakvänd, idiotisk

中文（简体）(Chinese (Simplified))
前后颠倒的, 荒谬的, 不合理的

中文（繁體）(Chinese (Traditional))
adj. - 前後顛倒的, 荒謬的, 不合理的

한국어 (Korean)
adj. - 앞뒤가 뒤바뀐, 상식을 벗어난

日本語 (Japanese)
adj. - 前後転倒の, 途方もない, ばかげた, 非常識な, 不合理な

العربيه (Arabic)
‏(صفه) غير معقول, مخالف للصواب‏

עברית (Hebrew)
adj. - ‮מגוחך, אבסורדי, לא-טבעי‬

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