slithery

slithery
    adj 1: having a slippery surface or quality ; "slithery mud";
           "slithery eels"
    

62 Moby Thesaurus words for "slithery":
      adhesive, amylaceous, buttery, clabbered, clammy, clotted,
      coagulated, curdled, doughy, gaumy, gelatinous, glairy, gluelike,
      gluey, glutenous, glutinose, glutinous, gooey, greased, greasy,
      grumous, gumbo, gumbolike, gumlike, gummous, gummy, heavy,
      inspissated, jelled, jellied, jellylike, lubric, lubricated,
      lubricious, mucilaginous, oiled, oily, pasty, ropy, slabby, slick,
      sliddery, slimy, slipper, slippery, slippy, soaped, starchy,
      sticky, stodgy, stringy, syrupy, tacky, tenacious, thick,
      thickened, tough, tremelloid, tremellose, viscid, viscose,
      viscous