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Definitions

lock

[lok] / lɒk /
NOUN
device that fastens and bars free passage
Synonyms
STRONGEST
bolt grip latch
STRONG
bar bond catch clamp clasp clinch connection fastening fixture grapple hasp hook junction link padlock
Antonyms
STRONGEST
key
VERB
fasten, clasp
Synonyms
STRONGEST
close engage join press seal shut
STRONG
bar bolt button clench clutch embrace encircle enclose entwine grapple grasp hug latch link mesh secure unite
WEAK
button up turn the key
Antonyms
STRONGEST
disjoin open release unseal
STRONG
divide let go loose loosen separate unfasten unlock unloose
WEAK
unclasp

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.

According to Amazon MGM’s press release, the film’s story details “are being kept under lock, key and an industrial-strength Schwartz shield.”

From Los Angeles Times • Apr. 16, 2026

Deutsche Bank’s Jim Reid laid out a few in commentary shared with MarketWatch on Wednesday, where he noted that stocks have started to decouple from crude-oil prices while bonds continued to trade in lock step.

From MarketWatch • Apr. 15, 2026

The Red Roses always looked in control of the game but one area of concern will be the loss of another lock after Morwenna Talling was carted off on a stretcher.

From BBC • Apr. 11, 2026

Looking to tap in to the innovation, big drugmakers and investors are spending billions to lock up rights to promising Chinese-originated drug candidates like 3SBio’s.

From The Wall Street Journal • Apr. 11, 2026

I’d rush through my homework and lock myself in my room till dinner, then hurry through dishes and disappear till the next morning.

From "Ida B" by Katherine Hannigan

Vocabulary lists containing lock

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