List of stealthy synonyms and stealthy related words.
Machiavellian, Machiavellic, acute, arch, artful, astute, back-door, backstairs, cagey, canny, catlike, catty, clandestine, clever, closet, covert, crafty, cunning, cute, deceitful, deep, deep-laid, designing, diplomatic, doggo, feline, foxy, furtive, guileful, hidden out, hidlings, hole-and-corner, hugger-mugger, hush-hush, in ambush, in hiding, in the wings, ingenious, insidious, inventive, knowing, lurking, noiseless, on tiptoe, pawky, politic, privy, prowling, pussyfoot, pussyfooted, quiet, ready, resourceful, scheming, secret, secretive, serpentine, sharp, shifty, shrewd, silent, skulking, slick, slinking, slinky, slippery, sly, smooth, snaky, sneak, sneaking, sneaky, sophistical, stealing, stealthful, strategic, subtile, subtle, supple, surreptitious, tactical, trickish, tricksy, tricky, under cover, under-the-counter, under-the-table, undercover, underground, underhand, underhanded, unobtrusive, vulpine, waiting concealed, wary, wily