unfasten

American  

[uhn-fas-uhn, -fah-suhn] / ʌnˈfæs ən, -ˈfɑ sən /

verb (used with object)

1. to release from or as from fastenings; detach.

2. to undo or open (something fastened).

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verb (used without object)

1. to become unfastened.

unfasten British  

/ ʌnˈfɑːsən /

verb

1. to undo, untie, or open or become undone, untied, or opened

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Etymology

Origin of unfasten

First recorded in 1175–1225, unfasten is from the Middle English word unfastnen. See un- ², fasten

Example Sentences

Mamá lets go of me and reaches up to unfasten her gold necklace with the small Star of David on it.

From Literature

Then we had to unfasten his fingers and quickly give him this old worn-out bathrobe of Louella’s.

From Literature

Each morning I’d get up, unfasten the bobby pins that held my pin curls in place, and get dressed.

From Literature

The robot unfastened her tool belt and draped it over a railing.

From Literature

"At first, I thought I was going to die. I managed to open my eyes, unfastened my seat belt and tried to exit the plane."

From BBC