unlock

verb

un·​lock ˌən-ˈläk 

unlocked; unlocking; unlocks

transitive verb

1

: to unfasten the lock of : open the lock on

Can you unlock the car for me?

2

: open, undo

unlock the padlock

3

: to free from restraints or restrictions

The shock unlocked a flood of tears.

4

: to furnish a key to : disclose

cracked the code to unlock the message

intransitive verb

: to become unfastened or freed from restraints

Synonyms of unlock

• unleash
• loosen
• release

Examples of unlock in a Sentence

Could you unlock the door for me?

geneticists unlocking the secrets of DNA

The material's potential was unlocked only through extensive testing.

How can I unlock my computer if I've forgotten the password?

This class will unlock your creativity.

Recent Examples on the Web

The system checks the robot’s permissions before automatically unlocking the door. — Bojan Stojkovski, Interesting Engineering, 26 Sep. 2026

When Matthew arrived, Kathryn told him the door was unlocked and to come inside. — Samantha Stutsman, PEOPLE, 26 Sep. 2026

The German sports brand held an Innovation Day on Thursday, and a local-for-local market approach, where 90 percent of the sourcing is done locally, appears to be the key to unlocking growth potential. — Vicki M. Young, Footwear News, 25 Sep. 2026

Monster Mash also introduces the Luck-O-Lantern, which unlocks rewards when filled with enough candy, and a dice duel with friends where each roll reveals a trick or a treat. — Mya Copeland, Variety, 25 Sep. 2026

Word History

First Known Use

14th century, in the meaning defined at transitive sense 1

Rhymes for unlock

• alcock
• beanstalk
• bedrock
• boardwalk
• catwalk
• cornstalk
• crosswalk
• deadlock
• feedstock
• fetlock
• flintlock
• goshawk

Kids Definition

unlock

verb

un·​lock ˌən-ˈläk 

ˈən-

1

: to open or unfasten through release of a lock

unlock the door

the chest won't unlock

2

: to set free : release

unlock a flood of emotions

3

: to make known

scientists unlocking the secrets of nature