sneak
Americanverb (used without object)
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to go in a stealthy or furtive manner; slink; skulk.
- Synonyms:
- steal
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to act in a furtive or underhand way.
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British Informal. to tattle; inform.
verb (used with object)
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to move, put, pass, etc., in a stealthy or furtive manner.
He sneaked the gun into his pocket.
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to do, take, or enjoy hurriedly or surreptitiously.
to sneak a cigarette.
noun
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a sneaking, underhand, or contemptible person.
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Informal. a stealthy or furtive departure.
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British Informal. tattletale; informer.
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Informal. a sneak preview.
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Cards. the lead of a singleton in a suit other than the trump suit, as in whist.
verb
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(intr; often foll by along, off, in, etc) to move furtively
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(intr) to behave in a cowardly or underhand manner
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(tr) to bring, take, or put stealthily
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informal (intr) to tell tales (esp in schools)
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informal (tr) to steal
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informal (intr; foll by off, out, away, etc) to leave unobtrusively
noun
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a person who acts in an underhand or cowardly manner, esp as an informer
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a stealthy act or movement
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( as modifier )
a sneak attack
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informal an unobtrusive departure
Usage
First recorded in writing toward the end of the 19th century in the United States, snuck has become in recent decades a standard variant past tense and past participle of the verb sneak : Bored by the lecture, he snuck out the side door. Snuck occurs frequently in fiction and in journalistic writing as well as on radio and television: In the darkness the sloop had snuck around the headland, out of firing range. It is not so common in highly formal or belletristic writing, where sneaked is more likely to occur. Snuck is the only spoken past tense and past participle for many younger and middle-aged persons of all educational levels in the U. S. and Canada. Snuck has occasionally been considered nonstandard, but it is so widely used by professional writers and educated speakers that it can no longer be so regarded.
Synonym Usage
See lurk.
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Participles
Conjugated Forms
Present
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sneaksimple
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sneakssimple
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have sneakedperfect
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have snuckperfect
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has sneakedperfect
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has snuckperfect
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am sneakingprogressive
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are sneakingprogressive
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is sneakingprogressive
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have been sneakingperfect progressive
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has been sneakingperfect progressive
Past
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sneakedsimple
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snucksimple
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had sneakedperfect
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had snuckperfect
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was sneakingprogressive
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were sneakingprogressive
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had been sneakingperfect progressive
Future
Etymology
Origin of sneak
1590–1600; variant of Middle English sniken, Old English snīcan “to creep”; cognate with Old Norse snīkja “to hanker after”
Explanation
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.
Vocabulary lists containing sneak
Nine Stories
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"On the Menu" and "Find the Adaptations"
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American Street
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Appeared in the April 6, 2026, print edition as 'New York’s Sneak Tax Attack'.
From The Wall Street Journal • Apr. 5, 2026
“Peacemaker” Sneak Peek and Panel 3:30 - 4:30 p.m.
From Los Angeles Times • Jul. 23, 2025
"Eat a heavy breakfast. Sneak in food if you can. Last year I had Taco Bell burritos," said user u/bluevero.
From Salon • Jun. 11, 2023
Car stereos blasted dance anthems by budding local hip-hop legends like Mac Dre, E-40, Keak da Sneak and Richie Rich.
From New York Times • Sep. 4, 2022
Sneak right up on you like they ain’t even there.
From "The Knife of Never Letting Go" by Patrick Ness
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
