IPA: /ʌnˈboʊlt/
KK: /ʌnˈboʊlt/
To remove or unlock the bolts from something, such as a door, allowing it to open.
He had to unbolt the door before he could enter the room.
Past: unbolted
Past Participle: unbolted
Unbolt → It is formed from "un-" (meaning not or opposite of) and "bolt" (from Old English "bolt", meaning a bar or fastening). The word "unbolt" means to remove a fastening or to open something that is secured.
Think of 'not' or 'opposite' ('un-') when you want to 'remove' a fastening ('bolt'). This helps you remember that unbolt means to open something that is secured.