trifle with

42 Moby Thesaurus words for "trifle with":
      bat out, be disrespectful, be overfamiliar with, botch, bungle,
      dash off, disesteem, disparage, disrespect, do anyhow,
      do by halves, do carelessly, do offhand, fake up, fudge up,
      jury-rig, knock off, knock out, knock together, lash up,
      make free with, not respect, patch, patch together, patch up,
      pound out, rank low, ridicule, rough out, roughcast, roughhew,
      show disrespect for, slap up, take a liberty, take liberties with,
      throw off, throw together, toss off, toss out, toss together,
      treat with disrespect, whomp up