Definition

1. Verb (Transitive):

   • To open something that is locked by releasing its lock: To use a key, code, or mechanism to disengage a lock, allowing a door, container, or device to be opened.
   • To make something accessible or available: To remove restrictions or barriers, allowing access to something that was previously inaccessible.
   • To release or set free: To free from a constraint or locked state, either physically or metaphorically.

2. Verb (Intransitive):

   • To become unlocked: To have its lock disengaged, allowing it to be opened.

Usage and Examples

• Transitive Verb (Opening a lock):

  • She used her key to unlock the front door.
  • Please unlock your phone so I can make a call.

• Transitive Verb (Making accessible):

  • Completing the first level will unlock new characters in the game.
  • The discovery helped unlock the mysteries of ancient history.

• Intransitive Verb (Becoming open):

  • This type of door unlocks automatically when the alarm is disarmed.

Advanced Usage

• "to unlock potential": To release or make available someone's or something's latent abilities or possibilities.

  • A good education can unlock a child's full potential.

• "to unlock a file/account": In computing, to remove security restrictions from a digital file, account, or feature.

  • You need the administrator password to unlock this document.

Variants and Related Words

• Unlocked (Adjective): Not locked; in a state where the lock is open.

  • I left the car unlocked by mistake.

• Unlockable (Adjective): Capable of being unlocked.

  • All the bonus levels are unlockable if you find the hidden keys.

Synonyms

• Open: To move something so that an opening is no longer closed.
• Unfasten: To release a fastening or lock.
• Release: To set free from confinement or restriction.
• Disengage: To release from a connected or locked position.

Antonyms

• Lock: To fasten or secure with a lock.
• Secure: To fasten or close firmly.

Phrasal Verbs and Related Constructions

• Unlock for: To open something specifically for someone or some purpose. (Note: This is a less common construction where "for" indicates the beneficiary).
  • Could you unlock the cabinet for me? I need the supplies inside.

Related Idioms and Phrases

• "The key to unlock...": The essential means to solve a problem or gain access.
  • Trust is the key to unlock a strong relationship.

Verb

1. become unlocked
   • The door unlocked from the inside
2. set free or release
3. open the lock of
   • unlock the door