pre·pos·ter·ous /prɪˈpɑst(ə)rəs/
 (a.)前後顛倒的,不合理的,荒謬的
 Pre·pos·ter·ous a.
 1. Having that first which ought to be last; inverted in order. [Obs.]
    The method I take may be censured as preposterous, because I thus treat last of the antediluvian earth, which was first in the order of nature.   --Woodward.
 2. Contrary to nature or reason; not adapted to the end; utterly and glaringly foolish; unreasonably absurd; perverted. “Most preposterous conclusions.”
    Preposterous ass, that never read so far!   --Shak.
 Syn: -- Absurd; perverted; wrong; irrational; foolish; monstrous. See Absurd.
 -- Pre*pos*ter*ous*ly, adv. -Pre*pos*ter*ous*ness, n.
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 preposterous
      adj : 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" [syn: absurd, cockeyed, derisory, idiotic,
             laughable, ludicrous, nonsensical, ridiculous]