Quick definitions from WordNet (sneak)
▸ noun: someone who prowls or sneaks about; usually with unlawful intentions
▸ noun: someone acting as an informer or decoy for the police
▸ verb: put, bring, or take in a secretive or furtive manner ("Sneak a look")
▸ verb: to go stealthily or furtively ("..stead of sneaking around spying on the neighbor's house")
▸ verb: pass on stealthily
▸ verb: make off with belongings of others
▸ Also see sneak
▸ noun: someone who prowls or sneaks about; usually with unlawful intentions
▸ noun: someone acting as an informer or decoy for the police
▸ verb: put, bring, or take in a secretive or furtive manner ("Sneak a look")
▸ verb: to go stealthily or furtively ("..stead of sneaking around spying on the neighbor's house")
▸ verb: pass on stealthily
▸ verb: make off with belongings of others
▸ Also see sneak