simple past tense and past participle of unlock
"She unlocked the front door before entering the house."
In plain English: To unlock something means to open it by using a key, code, or special ability so that you can get inside or use it freely.
"He unlocked the front door before stepping inside his house."
Not secured or protected by a lock.
"The garden gate stood unlocked, allowing anyone to walk in without permission."
In plain English: Unlocked means something is not locked and can be opened freely without needing a key or code.
"The front door was unlocked when we arrived home early."