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unpleasantry
unplowed
unplug
unplugged
unplumbed
unpolled
unpopular
unpracticed
unprecedented
unpredictable
unpremeditated
unprepared
unprepossessing
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unpretentious
unprime
unprincipled
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unprecedented
un·prec·e·dent·ed [ un préssə dèntəd ]


adjective 
Definition:
 
lacking precedent: having no earlier parallel or equivalent
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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