preposterous

Etymology

From Latin praeposterus (“with the hinder part before, reversed, inverted, perverted”), from prae (“before”) + posterus (“coming after”).

adj

1. Absurd, or contrary to common sense.
   Leading the attack on the president's very citizenship is the professional vulgarian Donald Trump, who gets away with the kind of preposterous, race-based comments granted few black public figures. 4 December 2014, Timothy Egan, “A deficit of dignity”, in The New York Times
   Democrats, too, must be criticised. While they have not made preposterous statements or been threatening or demagogic, they, all too often, have come up short, failing to propose new ideas that can help unwind conflicts raging across the Middle East. January 30 2016, “America deserves more from presidential hopefuls”, in The National, retrieved 2016-01-31