unlock

To undo or open a lock or something locked by, for example, turning a key, or selecting a combination.transitive

• I unlocked the door and walked in.

To obtain access to something; to meet the requirements of a security or protection system.transitive

• I unlocked the dictionary article so I could edit it.
• This computer game is shareware, but you can pay for a code to unlock the full version.

To configure (a mobile phone) so that it is not bound to any particular carrier.transitive

To disclose or reveal previously unknown knowledge or potential.transitive

• The discovery of a clue unlocked the mystery.

To be or become unfastened or unrestrained.intransitive

• He had come straight up without mishap or swerving off his course, and his shut teeth unlocked.

To make available.figurativelytransitive

• He also warned of the supply chain issues, stating: "Don't pretend you're going to unlock half a dozen [electrification] schemes simultaneously because you'll probably flood the supply chain, we don't have the capacity."

To undermine something that has control over a situation; to find a way to counter or oppose.transitive

• Saka's cross unlocked a well-organised Ukraine defence for Kane to pounce and set England on their way before producing a superb piece of individual skill to effectively end the contest.

The act of unlocking something.

• Unlike modern, automated prisons, each cell here was locked and unlocked manually with a large skeleton key. The first duty was to get a proper head count of each inmate, insuring each was alive. Once done, an unlock was conducted.
• The instructions between a lock and an unlock form a critical section.

An initially hidden feature that is made available to reward the player for some achievement.

• The other unlocks, like a grenade launcher or a sniper's steady ability, didn't fit into my playstyle.