Main Entry: pre·pos·ter·ous

Pronunciation: \pri-ˈpäs-t(ə-)rəs\

Function: adjective

Etymology: Latin praeposterus, literally, in the wrong order, from prae- + posterus hinder, following — more at posterior

Date: 1542

: contrary to nature, reason, or common sense : absurd

— pre·pos·ter·ous·ly adverb

— pre·pos·ter·ous·ness noun