a. [ L. praeposterus; prae before + posterus coming after, latter. See Posterior. ] [ 1913 Webster ]
1. Having that first which ought to be last; inverted in order. [ Obs. ] [ 1913 Webster ]
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. [ 1913 Webster ]
2. Contrary to nature or reason; not adapted to the end; utterly and glaringly foolish; unreasonably absurd; perverted. “Most preposterous conclusions.” Shak. [ 1913 Webster ]
Preposterous ass, that never read so far! Shak. [ 1913 Webster ]
Syn. -- Absurd; perverted; wrong; irrational; foolish; monstrous. See Absurd. [ 1913 Webster ]
-- Pre*pos"ter*ous*ly, adv. -Pre*pos"ter*ous*ness, n. [ 1913 Webster ]