early 13c., biwreien, "to inform against;" mid-13c., "to speak ill of," from be- + Middle English wreien "betray," from Old English wregan "accuse" (cognate with Old Saxon wrogian, Dutch wroegen "accuse," Old High German ruogen, German rügen "to censure," Gothic wrohjan "accuse"). Perhaps somewhat influenced in sense by unrelated betray. Sense of "to reveal, expose" is from late 14c. "Probably more or less of a conscious archaism since the 17th c." [OED]. Related: Bewrayed; bewraying; bewrayment.