English Reference

Word

sneak

US/ˈsnik/

UK/snˈiːk/

Irregular verb

Forms

Infinitive

sneak

Past

sneaked / snuck (US)

Past participle

sneaked / snuck (US)

Definitions

01to move stealthily

B1 · Intermediate

v. to move quietly and secretly so that people do not see or hear you.

v. to move in a stealthy or surreptitious manner to avoid detection.

“I tried to sneak into the house without waking my parents.”

“The teenagers attempted to sneak past the security guard, but the gravel crunching under their boots gave them away immediately.”

Synonyms

Antonyms

02to take or bring secretly

B2 · Upper Intermediate

v. to take, give, or bring something secretly.

v. to convey or obtain something surreptitiously, often bypassing rules or observation.

“She managed to sneak some snacks into the cinema in her large bag.”

“He tried to sneak a glance at his colleague's notes during the meeting to see if his own proposal was mentioned.”

Synonyms

03to tell on someone

B2 · Upper Intermediate Informal · British English

v. to tell a person in authority about something bad that someone else has done.

v. to inform an authority figure of another person's misconduct or secrets.

“Don't sneak on your brother just because he stayed up late.”

“The younger students were warned not to sneak on their peers, as the school culture valued loyalty over strict rule enforcement.”

Usage

usually takes the preposition 'on'

Synonyms

snitchtattleinform

04a person who tells on others

B2 · Upper Intermediate Countable noun Informal

n. a person who secretly tells an authority about someone else's mistakes.

n. a person who acts in a stealthy or underhanded way, particularly an informer or tell-tale.

“Nobody liked him because he was a sneak who told the teacher everything.”

“The office environment became toxic when it was discovered that a sneak was reporting private conversations to the department head.”

Synonyms

05American football play

C1 · Advanced Countable noun Sports American English · Technical

n. a play where the quarterback dives forward with the ball to gain a short distance.

n. an offensive play in which the quarterback takes the snap and immediately lunges forward.

“The team won the game with a clever sneak on the final play.”

“With only inches to go for a first down, the coach called for a quarterback sneak to secure the position.”

Synonyms

quarterback sneak

06secret or surprise

B2 · Upper Intermediate

adj. done or happening in a secret or surprise way.

adj. acting or occurring in a stealthy, unannounced, or surreptitious manner.

“The army launched a sneak attack in the middle of the night.”

“The studio arranged a sneak preview of the film to gauge audience reactions before the global marketing campaign began.”

Antonyms

Real-World Examples

“He kept her there for four days before a couple of US aid workers sneaked her away on a private plane.”
The Guardian 27 Aug 2026
“Of course, it would not have been over: there are still 32 weeks left and Billie Joe Armstrong’s mum hasn’t even sneaked into his room yet.”
The Guardian 17 Sept 2026

Etymology

Possibly from Middle English sniken (“to creep, crawl”), from Old English snīcan (“to creep, crawl”), from Proto-West Germanic snīkan, from Proto-Germanic snīkaną (“to creep, crawl”), which is related to the root of snake. Compare Danish snige (“to sneak”), Swedish snika (“to sneak, hanker after”), Icelandic sníkja (“to sneak, hanker after”). Possibly related to snitch.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

VERB

sneak(B2)

ADJECTIVE

Idioms

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference