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[uhn-moo r] /ʌnˈmʊər/
verb (used with object)
to loose (a vessel) from moorings or anchorage.
to bring to the state of riding with a single anchor after being moored by two or more.
verb (used without object)
(of a vessel) to become unmoored.
Origin of unmoor
First recorded in 1490-1500, unmoor is from the Middle English word unmooren. See un-2, moor2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for unmoored
Contemporary Examples
Historical Examples
  • During this period my soldiers sleep; but the vessel must not be unmoored.

    The Buccaneer Mrs. S. C. Hall
  • She was cut off from duty, surrounded by strangers, unmoored from her niche in the world.

    The Second Fiddle Phyllis Bottome
  • They seated themselves in the boat and unmoored it from the pier.

    The Fair Maid of Perth Sir Walter Scott
  • Without any loss of time he unmoored the little ship, and stepped aboard.

    The Story of Siegfried James Baldwin
  • I ran in all haste to the beach, and unmoored a boat that lay alongside.

  • They had unmoored the pinnace, and were on their way to Shark's Island.

    Willis the Pilot Johanna Spyri
British Dictionary definitions for unmoored


/ʌnˈmʊə; -ˈmɔː/
verb (nautical)
to weigh the anchor or drop the mooring of (a vessel)
(transitive) to reduce the mooring of (a vessel) to one anchor
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 unmoored



late 15c., "to free from moorings," from un- (2) + moor (v.). Related: Unmoored.

Online Etymology Dictionary, © 2010 Douglas Harper
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