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murderous

[mur-der-uh s] /ˈmɜr dər əs/
adjective
1.
of the nature of or involving murder:
a murderous deed.
2.
guilty of, bent on, or capable of murder.
3.
extremely difficult, dangerous, or unpleasant:
murderous heat.
Origin of murderous
1525-1535
First recorded in 1525-35; murder + -ous
Related forms
murderously, adverb
murderousness, noun
nonmurderous, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for murderous

murderous

/ˈmɜːdərəs/
adjective
1.
intending, capable of, or guilty of murder
2.
(informal) very dangerous, difficult, or unpleasant: a murderous road
Derived Forms
murderously, adverb
murderousness, noun
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 murderous
adj.

1530s, a hybrid from murder + -ous. An Old English word for it was morðorhycgende. Related: Murderously; murderousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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