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unleavened

[uhn-lev-uh nd]
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adjective
  1. (of bread, cake, cookies, etc.) containing no leaven or leavening agent.
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Origin of unleavened

First recorded in 1520–30; un-1 + leaven + -ed3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for unleavened

unleavened

adjective
  1. (of bread, biscuits, etc) made from a dough containing no yeast or leavening
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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

Word Origin and History for unleavened

adj.

1520s, from un- (1) "not" + past participle of leaven.

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Online Etymology Dictionary, © 2010 Douglas Harper