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act of war

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noun

an act of aggression by a country against another with which it is nominally at peace.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for act of war

act of war

noun

an aggressive act, usually employing military force, which constitutes an immediate threat to peace
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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