-tard

plural -tards

1. derogatoryoffensiveslangvulgarUsed to form words conveying an attitude of contempt or doubt over the subject's intelligence.

   ʺOK, not that. No diddling the dumbtard.ʺ He paused. ʺWouldnʹt blame you if you were, though. Sheʹs kinda dishy.ʺ

   2014, Michaelbrent Collings, This Darkness Light, page 249

   2 more examples

   The left-right parallels are obvious, too, in the puerile nicknames used by radio hosts and in the comment threads of blogs and articles, whether for each other (libtards, dumbocrats, repugnicans, repukes), for public figures (Dumbya, Slick Willie, Shillary, Michael Moron), or for the media themselves (lamestream media, "Faux News").

   2012, Geoffrey Nunberg, Ascent of the A-word: Assholism, the First Sixty Years, page 188

   ' Shittard bollocking fuckcunts!' Harry Tattershall is a magnificent and venomous swearer: doing things with words that other people would require a snooker ball and a football sock to achieve.

   2013, David Mark, Original Skin