- unbarred, unbolted, unlatched, unlocked, unsecured - not firmly fastened or secured; "an unbarred door"; "went through the unlatched gate into the street"; "an unlocked room"
Antonym: fastened (indirect, via unfastened)
- unbolt - undo the bolt of; "unbolt the door"
--1 is one way to open, open up
Antonyms: bolt
Sample sentence:
They want to unbolt the doors