The DICT Development Group

  Scummy \Scum"my\, a.
     Covered with scum; of the nature of scum. --Sir P. Sidney.
     [1913 Webster]

  scummy
      adj 1: of the most contemptible kind; "abject cowardice"; "a low
             stunt to pull"; "a low-down sneak"; "his miserable
             treatment of his family"; "You miserable skunk!"; "a
             scummy rabble"; "a scurvy trick" [syn: abject, low,
             low-down, miserable, scummy, scurvy]
      2: covered with scum; "the scummy surface of the polluted pond"

  125 Moby Thesaurus words for "scummy":
     abject, abominable, arrant, atrocious, barfy, base, beggarly,
     beneath contempt, cheap, cheesy, common, contemptible, crappy,
     crummy, debased, degraded, depraved, despicable, dirty, disgusting,
     execrable, fecal, feculent, fetid, filmy, filthy, flagrant,
     flyblown, foliaceous, foliated, foul, fulsome, gaudy, gimcracky,
     gloppy, grave, gross, gunky, heinous, icky, in layers, lamellar,
     lamellate, lamellated, lamelliform, laminate, laminated, laminous,
     leaflike, leafy, little, low, low-down, lumpen, maggoty,
     malodorous, mangy, mean, measly, membranous, mephitic,
     meretricious, miserable, monstrous, mucky, nasty, nauseating,
     nefarious, obnoxious, odious, ordurous, paltry, pathetic, petty,
     pitiable, pitiful, poky, poor, puky, putrid, rank, reptilian,
     repulsive, rotten, rubbishy, sad, scabby, scrubby, scruffy, scurfy,
     scurvy, scuzzy, shabby, shitty, shoddy, slabby, slimy, sloppy,
     sloshy, sludgy, slushy, small, sorry, spathic, spathose, sposhy,
     squalid, stratified, stratiform, three-ply, trashy, trumpery,
     two-for-a-cent, two-for-a-penny, two-ply, twopenny,
     twopenny-halfpenny, unmentionable, valueless, vile, vomity, wormy,
     worthless, wretched, yecchy