DEFINITIONS
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lethal

[ lee-thuh l ]
/ ˈli θəl /

adjective

of, relating to, or causing death; deadly; fatal: a lethal weapon; a lethal dose.
made or carried out to cause death: a lethal chamber; a lethal attack.
causing great harm or destruction: The disclosures were lethal to his candidacy.

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Words nearby lethal

leta, letch, letchworth, letdown, letha, lethal, lethal chamber, lethal dose, lethal factor, lethal gene, lethal midline granuloma

Origin of lethal

1575–85; < Latin lētālis, equivalent to lēt(um) death + -ālis -al1; spelling (hence pronunciation) with -h- by association with Greek lḗthē oblivion

SYNONYMS FOR lethal

1 See fatal.

OTHER WORDS FROM lethal

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hyper-lethal

lethal
/ (ˈliːθəl) /

adjective

able to cause or causing death
of or suggestive of death

Derived forms of lethal

lethality (liːˈθælɪtɪ), nounlethally, adverb

Word Origin for lethal

C16: from Latin lēthālis, from lētum death
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

Medical definitions for hyper-lethal

lethal
[ lē′thəl ]

adj.

Capable of causing death.
Of, relating to, or causing death.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.