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unfasten

[uhn-fas-uh n, -fah-suh n] /ʌnˈfæs ən, -ˈfɑ sən/
verb (used with object)
1.
to release from or as from fastenings; detach.
2.
to undo or open (something fastened).
verb (used without object)
3.
to become unfastened.
Origin of unfasten
1175-1225
1175-1225; Middle English unfastnen. See un-2, fasten
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for unfasten
Contemporary Examples
Historical Examples
  • His hands were feeble and numb, but he contrived to unfasten the strap.

    His Unknown Wife Louis Tracy
  • Then with her slender fingers she tried to unfasten the knots that secured the cord.

    Henry Dunbar M. E. Braddon
  • "No, not Champe—Dan," said Betty, stooping to unfasten her boots.

    The Battle Ground Ellen Glasgow
  • Jeter frantically tried to unfasten the handcuffs as they ran.

    Lords of the Stratosphere Arthur J. Burks
  • Laddie knelt down and began to unfasten the strap of the one good skate, which was still on Rose's left foot.

  • I'll sit on his head, son, while you see how many pieces you can unfasten in his harness.

    Mixed Faces Roy Norton
  • In addition to this Haley tied his wrists together, fearing that otherwise he might be able to unfasten the knot.

    Brave and Bold Horatio Alger
  • I'll unfasten it for you just as soon as you are ready to start.

    Dave Porter At Bear Camp Edward Stratemeyer
  • Yea, though every knight in the realm essayed to unfasten that cincture, it would not yield, except to one alone.

British Dictionary definitions for unfasten

unfasten

/ʌnˈfɑːsən/
verb
1.
to undo, untie, or open or become undone, untied, or opened
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for unfasten
v.

early 13c., from un- (2) + fasten. Related: Unfastened; unfastening.

Online Etymology Dictionary, © 2010 Douglas Harper
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