sneaking

Synonyms and related words:

all fours, back-door, backstairs, clandestine, covert, cowering, crawl, crawling, creep, creeping, cringing, deep-rooted, deep-seated, devious, doggo, duplicitous, feline, furtive, guileful, gumshoeing, gut, hidden, hidden out, hidlings, hole-and-corner, hugger-mugger, in ambush, in hiding, in the wings, indirect, inherent, innate, intuitive, lingering, lurking, nagging, niggling, nightwalking, on tiptoe, padding, persistent, private, privy, prowling, pussyfoot, pussyfooted, pussyfooting, quailing, quiet, scrabble, scramble, secret, shifty, sidling, skulking, slinking, slinky, sly, snaking, sneaky, stealing, stealthy, suppressed, surreptitious, tippytoe, tiptoe, tiptoeing, undeclared, under cover, under-the-counter, under-the-table, undercover, underground, underhand, underhanded, undisclosed, undivulged, unexpressed, unobtrusive, unrevealed, unvoiced, waiting concealed, worming, worrisome, worrying