English Reference

Word

locked

US/ˈɫɑkt/

UK/lˈɒkt/

Definitions

01secured with a key

A2 · Elementary

adj. fastened with a lock so that it cannot be opened without a key or code.

adj. secured by a mechanical or electronic locking mechanism to prevent unauthorised entry or opening.

“She tried the handle, but the front door was locked tight.”

“The investigators found the safe locked, suggesting that the thief had either been interrupted or possessed the necessary combination.”

Antonyms

02fixed or unchangeable

B1 · Intermediate

adj. fixed in one position or unable to be changed.

adj. firmly fixed in a specific position or state; often used for prices, gears, or physical joints.

“The two companies agreed on a locked price for the next three years.”

“With the wheels locked in a sideways skid, the driver had little hope of regaining control before the vehicle reached the soft verge.”

Antonyms

03computing/digital access

B2 · Upper Intermediate Computing Technical

adj. protected so that only one person or program can use it at a time.

adj. restricted by a mutex, token, or password to prevent simultaneous access or modification of data.

“I cannot edit the spreadsheet because the file is currently locked by another user.”

“The database record remains locked until the transaction is either committed or rolled back, ensuring data integrity across the network.”

Antonyms

04very drunk

C1 · Advanced Informal · Dialect

adj. extremely drunk from drinking too much alcohol.

adj. a state of extreme intoxication.

“He had way too many pints and ended up completely locked.”

“After the wedding reception, half the guests were absolutely locked and had to be poured into taxis.”

Teaching tip

This sense is primarily used in Irish English; learners should use 'drunk' or 'intoxicated' in formal or international contexts.

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “locked” in context.

01. locked away

Etymology

* (drunk): Perhaps from airlocked.

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

Word family

ADJECTIVE

locked(B1)

Idioms

01. locked up

Domain

Computing

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.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL 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: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784
Frequency
Common
Level
B1 · Intermediate
Updated

QR code

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English Reference