unlock

unlock — verb

1. to release the lock of something such as a door, gate, or box so that it can be

1.verbtransitiveA2
Definition

to release the lock of something such as a door, gate, or box so that it can be opened, typically with a key or by typing a code.

Example

Jabari unlocked the front door with his key and stepped inside.

unlock + door with a key

The security guard unlocked the gate at exactly eight o'clock.

passive agent: security guard + unlock + gate

Common collocations
  • unlock the door
  • unlock the gate
  • unlock a safe
  • unlock a drawer
Synonyms
  • open

    more general; does not specify that a lock was involved

  • unlatch

    less common; specifically about releasing a latch rather than turning a key

Antonyms
  • lock

    to fasten something with a lock

Grammar Patterns

unlock + noun phrase

Usage Note

Usually takes a direct object referring to the locked item (door, gate, box, etc.). The instrument (key, code) is introduced by with or using.

Common Mistakes

I unlocked the key and opened the door.
I unlocked the door with the key and opened it.
unlock applies to the door or lock, not the key itself.

2. to provide a passcode, pattern, or biometric scan on a phone or tablet so that t

2.verbtransitiveA2
Definition

to provide a passcode, pattern, or biometric scan on a phone or tablet so that the screen turns on and the device becomes ready for use.

Example

Élise unlocked her phone by pressing her thumb on the screen.

unlock + phone + by + method

The screen stays dark until you unlock it with a password.

passive: unlock + with a password

Common collocations
  • unlock your phone
  • unlock the screen
  • unlock a device
  • unlock with a fingerprint
Synonyms
  • log into

    broader; refers to accessing an account, not just the screen

Antonyms
  • lock

    to put the device into a locked screen state

Grammar Patterns

unlock + phone / device

Usage Note

Subject is typically a person; the object is the phone, tablet, or screen. Frequently used with by + method (fingerprint, face, code) or with + tool.

Common Mistakes

I unlocked the password to use my phone.
I unlocked my phone using the password.
unlock applies to the device, not the password.

3. to remove the software restriction on a mobile phone so that it can work with an

3.verbtransitiveB2
Definition

to remove the software restriction on a mobile phone so that it can work with any phone company's network instead of only the one it was originally sold for.

Example

The phone company unlocked Pim's phone so he could switch to a cheaper plan.

unlock + phone + for switching network

Rania asked the shop to unlock her phone before her trip to Japan.

Common collocations
  • unlock a phone
  • unlock a device
  • get a phone unlocked
Synonyms
  • unblock

    sometimes used interchangeably but less precise for network unlocking

Grammar Patterns

unlock + phone / device + for + network

Usage Note

Subject is usually a phone company, shop, or technician. The phone is the object. Common in discussions about phone contracts and international travel.

4. to find and reveal facts about something that were previously hidden or unknown

4.verbtransitiveB2
Definition

to find and reveal facts about something that were previously hidden or unknown — for example, a scientist who cracks the code of an ancient language.

Example

The research team unlocked the secrets of an ancient writing system.

unlock + the secrets of + something

A team of geologists unlocked new information about how mountains form.

Common collocations
  • unlock the secrets
  • unlock the mystery
  • unlock the truth
  • unlock information
Synonyms
  • uncover

    very similar; focuses on revealing what was hidden

  • reveal

    broader; can be intentional or accidental

  • crack

    informal; often used for codes or puzzles

Antonyms
  • conceal

    to keep something hidden on purpose

Grammar Patterns

unlock + the secrets / truth / mystery + of + something

Usage Note

The object is usually an abstract noun: secrets, mystery, truth, information. Often used in academic, investigative, or journalistic contexts.

5. to make something, such as a skill, resource, or opportunity, become available a

5.verbtransitiveB2
Definition

to make something, such as a skill, resource, or opportunity, become available and usable when it was previously not being used enough or to its full extent.

Example

The training course helped Christopher unlock his full potential as a musician.

unlock + potential + as a [role]

Proper funding can unlock the economic power of rural communities.

Common collocations
  • unlock potential
  • unlock value
  • unlock opportunities
  • unlock growth
Synonyms
  • release

    more general; may lack the sense of 'making something fully usable'

  • tap into

    phrasal verb; suggests accessing a resource that was waiting to be used

Antonyms
  • stifle

    to prevent something from developing or being used

Grammar Patterns

unlock + potential / value / power + of + something

Usage Note

Subject is often an abstract noun (training, education, investment) or a tool (software, policy). Object is typically an abstract noun like potential, power, value, or opportunity.

6. to make hidden content in a video game, such as a new level, character, or piece

6.verbtransitiveB1
Definition

to make hidden content in a video game, such as a new level, character, or piece of equipment, become available to the player, usually after reaching a goal or finishing a challenge.

Example

Players unlock a new racing track after winning the first five races.

unlock + a new [item] + after + [condition]

Quinn unlocked a secret level by finding all the hidden coins.

Common collocations
  • unlock a level
  • unlock a character
  • unlock achievements
  • unlock content
Synonyms
  • open up

    phrasal verb; less specific to gaming, same general meaning

  • access

    more formal; focuses on the ability to use rather than the act of earning

Grammar Patterns

unlock + level / feature / item / achievement

Usage Note

Common in informal contexts, especially gaming forums and reviews. The object is the reward (level, item, achievement). The condition is introduced by after, by, or once.

7. to free a person's imagination so that it starts producing original ideas and vi

7.verbtransitiveB2
Definition

to free a person's imagination so that it starts producing original ideas and vivid pictures in the mind.

Example

Travel can unlock the imagination in ways that no book can.

can unlock + the imagination

The art teacher's class unlocked Asher's imagination and he began to paint every day.

Common collocations
  • unlock the imagination
  • unlock creativity
  • unlock the mind
Synonyms
  • stimulate

    more scientific; suggests activating the mind rather than freeing it

  • unleash

    stronger; suggests a sudden and powerful release of creativity

Antonyms
  • inhibit

    to hold back or restrict creative thinking

Grammar Patterns

unlock + the / someone's + imagination

Usage Note

The direct object is almost always imagination, creativity, or mind. Subject is typically an experience (travel, art, music, reading) that inspires creative thinking.

Word family

  • lock
    verbA2
  • lock
    nounA2
  • unlocked
    adjectiveB1
  • locking
    adjectiveB2
  • lockable
    adjectiveB2
  • unlockable
    adjectiveC1

Synonym discussion

Sense: verb/1

Unlock, open, unlatch, and release all involve making something accessible, but they differ in what they focus on. Unlock specifically means turning a key or entering a code so a lock releases — the focus is on the lock itself, not what happens after. Open is much broader and can mean simply moving a door or lid aside, whether or not it was locked. Unlatch is more mechanical; it describes lifting or sliding a metal bar (a latch) to free a door or window. Release has a wider range of uses and often implies freeing something from restraint — a prisoner, a button, or a catch. For example: 'Jabari unlocked the front door with his key' tells you the lock was the obstacle. 'Jabari opened the door' tells you nothing about a lock. 'He unlatched the garden gate' suggests a simple metal bar rather than a key-operated lock.

unlock ↗open ↗unlatchrelease ↗

Common collocations

Nouns

Adverbs

Phrases

  • unlock the door to
  • unlock the key to

Prepositions

Etymology

Proto-GermanicOld EnglishMiddle EnglishEnglish

Unlock comes from Old English 'onlocnian', formed from 'on-' (meaning 'un-, not') and 'locnian' (to lock). 'Lock' itself traces back to Proto-Germanic 'lukaną', meaning 'to close or shut'. The prefix 'un-' here reverses the action of locking. The word first appeared before the 12th century in the simple physical sense of opening a lock. By the 19th century, writers began using it figuratively for revealing secrets or freeing the mind — a pattern that has expanded greatly in the digital age, where 'unlock' now applies to phone screens, network restrictions, and game content.