1939, "clumsy, careless, sloppy," U.S. Army Air Corps slang, of unknown origin. Origins among cadets in Texas suggest possible connection to Mexican Spanish rancho (see ranch (n.)), which had connotations of animal filth by 1864. Sense of "coarse, vulgar, smutty" is from 1967. Related: Raunchiness.
Web design and development by MaoningTech.