verb (used with object), un·froze, un·fro·zen, un·freez·ing.
  1. to cause to thaw; melt.
  2. to remove or relax controls or restrictions on (funds, prices, rents, etc.).
verb (used without object), un·froze, un·fro·zen, un·freez·ing.
  1. to become unfrozen; thaw.

Origin of unfreeze

First recorded in 1575–85; un-2 + freeze
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for unfreeze


verb -freezes, -freezing, -froze or -frozen
  1. to thaw or cause to thaw
  2. (tr) to relax governmental restrictions on (wages, prices, credit, etc) or on the manufacture or sale of (goods, etc)
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