Synonyms and related words :
arrant coward, blackguard, caitiff, clandestine, couch, covert, cower, craven, crawl, creep, cringe, crouch, cur, dastard, devil, fink, furtive, glide, go on tiptoe, grass, grovel, gumshoe, heel, hole-and-corner, hush-hush, inch, inch along, informer, knave, lay wait, lie in wait, louse, lurk, nark, nightwalk, pad, poltroon, precious rascal, prowl, pussyfoot, quail, rapscallion, rascal, recreant, reptile, rogue, run, scalawag, scamp, scoundrel, scrabble, scramble, shadow, shirk, shithead, shyster, sidle, skulk, skunk, slide, slink, slip, slither, sly, smuggle, snake, sneaker, snitch, snook, spalpeen, stalk, steal, steal along, stealthy, stoolie, surreptitious, tippytoe, tiptoe, toad, undercover, villain, weasel, worm, worm along