all fours, barbouillage, beat about, bore, burrow, clamber, crawl, crawling, creep, creeping, delve, dig, dig out, dike, doodle, dredge, drill, drive, excavate, feel around, feel for, fumble, furrow, go on tiptoe, gouge, gouge out, grabble, groove, grope, grope for, grovel, grub, gumshoe, gumshoeing, hen scratches, hen tracks, inch, inch along, lower, mine, nightwalk, nightwalking, pad, padding, pattes de mouche, poke around, pothookery, pothooks, pothooks and hangers, prowl, prowling, pry around, pussyfoot, pussyfooting, quarry, sap, scoop, scoop out, scramble, scrape, scratch, scrawl, scribble, scribbling, shovel, sidle, sidling, sink, slink, slinking, snake, snaking, sneak, sneaking, spade, squiggle, steal, steal along, stealing, tippytoe, tiptoe, tiptoeing, trench, trough, tunnel, worm, worm along, worming