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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.

"Indian refiners will likely move quickly to lock in the additional barrels the extension unlocks before the May 16 deadline."

From Barron's • Apr. 26, 2026

Airlines do hedge prices, meaning they agree deals in advance that help them lock in a lower price.

From BBC • Apr. 23, 2026

That prompted some companies to lock in oil prices near $60 per barrel.

From MarketWatch • Apr. 23, 2026

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

In Phoenix, Dad and Steph lock up the apartment when they’re only running downstairs to grab the mail.

From "Clairboyance" by Kristiana Kahakauwila

Vocabulary lists containing lock

Chapter 11: Growth and Expansion

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