slither

from WordNet (r) 3.0 (2006)

slither
    v 1: to pass or move unobtrusively or smoothly; "They slid
         through the wicket in the big gate" [syn: {slither},
         {slide}]

from The Collaborative International Dictionary of English v.0.48

slither \slith"er\ (sl[i^][th]"[~e]r), v. i. [Cf. G. schlittern,
   LG. schliddern. See {slide}.]
   To slide; to glide. [Prov. Eng.]
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

133 Moby Thesaurus words for "slither":
      amble, avalanche, barge, bowl along, bundle, clump, coast,
      coasting, crawl, creep, drag, droop, flit, flounce, flow, flowing,
      fly, foot, footslog, gait, gallop, glide, gliding, glissade,
      glissando, halt, hippety-hop, hitch, hobble, hop, ice-skate, jog,
      jolt, jump, landslide, landslip, limp, lock step, lumber, lunge,
      lurch, lurk, mince, mincing steps, pace, paddle, peg, piaffe,
      piaffer, plod, prance, prowl, rack, roll, roller-skate, sail,
      sailing, sashay, saunter, scuff, scuffle, scuttle, shamble,
      shuffle, sideslip, sidle, single-foot, skate, skateboard, skating,
      ski, skid, skiing, skim, skip, skitter, slather, sled, sledding,
      sleigh, slick, slidder, slide, slide down, sliding, slink, slip,
      slippage, slipping, slithering, slog, slouch, slowness, snake,
      sneak, snowslide, snowslip, stagger, stalk, stamp, steal, step,
      stomp, straddle, straggle, stride, stroll, strolling gait, strut,
      stump, subsidence, swagger, sweep, sweeping, swing, tittup,
      toboggan, tobogganing, toddle, totter, traipse, tread, trip, trot,
      trudge, undulate, velocity, waddle, walk, wamble, wiggle, wobble,
      worm