un fasten

verb (used with object)

to release from or as from fastenings; detach.

to undo or open (something fastened).

verb (used without object)

to become unfastened.

Origin:
1175–1225; Middle English unfastnen. See un-², fasten

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins

World English Dictionary

unfasten (ʌnˈfɑːs^ən)

—vb
	to undo, untie, or open or become undone, untied, or opened

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10

Un fasten is always a great word to know.

So is ninnyhammer. Does it mean:

a fool or simpleton; ninny.

a gadget; dingus; thingumbob.

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Word Origin & History

unfasten

early 13c., from un- (2) + fasten.

Matching Quote

"Therefore take up the whole armor of God, so that you may be able to withstand on that evil day, and having done everything, to stand firm. Stand therefore, and fasten the belt of truth around your waist, and put on the breastplate of righteousness. As shoes for your feet put on whatever will make you ready to proclaim the gospel of peace. With all of these, take the shield of faith, with which you will be able to quench all the flaming arrows of the evil one. Take the helmet of salvation, and the sword of the Spirit, which is the word of God."

-unknown author

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un fasten

un·fas·ten