The word sneak has many shades of meaning, but all involve doing something in a secretive or stealthy way. If you sneak home after midnight, that means you’re quietly creeping into the house so no one will hear you.

In addition to moving furtively, sneak can also mean doing something secretly or slipping something in. You might sneak a cookie when no one is looking, or you might sneak your brother into a concert. You could even sneak a glance at that cute guy in your math class — you do it when you think no one will notice. Sneak has a noun form that describes a furtive person — someone who does a lot of sneaking.

Definitions of sneak

v to go stealthily or furtively

“..stead of sneaking around spying on the neighbor's house”
creep, mouse, pussyfoot
Type of:
use one's feet to advance; advance by steps

v pass on stealthily

Type of:
give, hand, pass, pass on, reach, turn over
place into the hands or custody of

v put, bring, or take in a secretive or furtive manner

sneak a look”
sneak a cigarette”
Type of:
act, move
perform an action, or work out or perform (an action)

v make off with belongings of others

abstract, cabbage, filch, hook, lift, nobble, pilfer, pinch, purloin, snarf, swipe
Type of:
take without the owner's consent

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

Type of:
disagreeable person, unpleasant person
a person who is not pleasant or agreeable

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

prowler, stalker
Type of:
interloper, intruder, trespasser
someone who intrudes on the privacy or property of another without permission

n someone acting as an informer or decoy for the police

canary, fink, sneaker, snitch, snitcher, stool pigeon, stoolie, stoolpigeon
Type of:
betrayer, blabber, informer, rat, squealer
one who reveals confidential information in return for money

adj marked by quiet and caution and secrecy; taking pains to avoid being observed

“a sneak attack”
furtive, sneaky, stealthy, surreptitious
hidden on any grounds for any motive

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