unlock UK /ʌnˈlɒk/US /ʌnˈlɑk/verb 7noun 2forms 3 verb7 •To undo or open a lock or something locked by, for example, turning a key, or selecting a combination.I unlocked the door and walked in. •To be or become unfastened or unrestrained.He had come straight up without mishap or swerving off his course, and his shut teeth unlocked. — 1912 •To obtain access to something; to meet the requirements of a security or protection system.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. •To disclose or reveal previously unknown knowledge or potential.The discovery of a clue unlocked the mystery. •(figurative) To make available. •To undermine something that has control over a situation; to find a way to counter or oppose.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. — 2023 noun2 •The act of unlocking something.The instructions between a lock and an unlock form a critical section. — 2011 •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. — 2012 formsunlocked · unlocking · unlocks