1) Become unlocked 2) Exclusively Saxon word 3) Exclusively Anglo word 4) Get the right combination to 5) Have the right combination 6) Key a knob to the left 7) Open 8) Open a deadbolt 9) Open a safe 10) Open an achievement 11) Open the lock of 12) Open up 13) Open with a combination 14) Open with a key 1) Decode 2) Open 3) Release 4) Unbar 5) Unbolt 6) Undo 7) Unfasten 8) Unlk 
• (v. t.) To open, in general; to lay open; to undo. • (v. t.) To unfasten, as what is locked; as, to unlock a door or a chest.
[v] - set free or release 2. [v] - open the lock of 3. [v] - become unlocked
to undo the lock of (a door, chest, etc.), esp. with a key. · to open or release by or as if by undoing a lock. · to open (anything firmly closed or joined): to unlock the jaws. · to lay open; disclose: to unlock the secrets of one's heart.