· a person who is regarded as underhanded and furtive and contemptible

Hypernym(s): unpleasant_person, disagreeable_person

· someone who prowls or sneaks about; usually with unlawful intentions

Synonym(s): prowler, stalker

Hypernym(s): intruder, interloper, trespasser

· someone acting as an informer or decoy for the police

Synonym(s): fink, snitch, snitcher, stoolpigeon, stool_pigeon, stoolie, sneaker, canary

Hypernym(s): informer, betrayer, rat, squealer, blabber

· to go stealthily or furtively; "..stead of sneaking around spying on the neighbor's house"

Synonym(s): mouse, creep, pussyfoot

Hypernym(s): walk

· put, bring, or take in a secretive or furtive manner; "sneak a look"; "sneak a cigarette"

Hypernym(s): act, move

· make off with belongings of others

Synonym(s): pilfer, cabbage, purloin, pinch, abstract, snarf, swipe, hook, filch, nobble, lift

Hypernym(s): steal, rip_off, rip

· pass on stealthily; "He slipped me the key when nobody was looking"

Synonym(s): slip

Hypernym(s): pass, hand, reach, pass_on, turn_over, give

· marked by quiet and caution and secrecy; taking pains to avoid being observed; "a furtive manner"; "a sneak attack"; "stealthy footsteps"; "a surreptitious glance at his watch"

Synonym(s): furtive, sneaky, stealthy, surreptitious