n. 25B6; verb
I sneaked out : CREEP, slink, steal, slip, slide, sidle, edge, move furtively, tiptoe, pussyfoot, pad, prowl.
she sneaked a camera in : BRING/TAKE SURREPTITIOUSLY, bring/take secretly, bring/take illicitly, smuggle, spirit, slip.
he sneaked a doughnut : TAKE FURTIVELY, take surreptitiously; steal; informal snatch.
(Brit. informal) the little squirt sneaked on me : INFORM, tell tales; report, give someone away, be disloyal, sell out, stab in the back; informal squeal, rat, blow the whistle, peach, snitch, stitch up; Brit. informal grass, split, shop; Scottish informal clype; N. Amer. informal finger; Austral./NZ informal dob.
25B6; noun (Brit. informal) Ethel was the class sneak : INFORMER, traitor; informal snitch, squealer, rat, whistle-blower; Brit. informal grass; Scottish informal clype; N. Amer. informal fink; Austral./NZ informal dobber.
25B6; adjective a sneak preview : FURTIVE, secret, stealthy, sly, surreptitious, clandestine, covert; private, quick.