[1] : The Collaborative International Dictionary of English v.0.48

slither \slith"er\ sli^th"~er, v. i. cf. g. schlittern,
   lg. schliddern. see slide.
   to slide; to glide. prov. eng.
   1913 webster
see also:
slide 

[2] : WordNet (r) 2.0

slither
     v : to pass or move unobtrusively or smoothly; "they slid
         through the wicket in the big gate" syn: slide
see also:
slide 

[3] : 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

Slither >> S Words
Slither, definition of term: Slither
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