unlock Definition

unlock
verb

1. To undo the lock of (a door, etc).

Thesaurus: open, unfasten, unlatch, free, release, disengage.
2. To free someone or something from being locked up.
3. To release or reveal (eg emotions, etc).

Example: The accident unlocked the memory of her father's death
4. To explain or find the key to (a puzzle, etc).
intr
5. To become unlocked.

Derivative: unlockable
adj

Derivative: unlocked
adj

Etymology: 15c.