lethal

[ lee-thuhl ]
See synonyms for: lethallethalitylethalness on Thesaurus.com

adjective
  1. of, relating to, or causing death; deadly; fatal: a lethal weapon;a lethal dose.

  2. made or carried out to cause death:a lethal chamber;a lethal attack.

  1. causing great harm or destruction: The disclosures were lethal to his candidacy.

Origin of lethal

1
First recorded in 1575–85; from Latin lētālis, equivalent to lēt(um) “death” + -ālis -al1; spelling (hence pronunciation) with -h- by association with Greek lḗthē “oblivion”; see Lethe

synonym study For lethal

1. See fatal.

Other words from lethal

  • le·thal·i·ty [lee-thal-i-tee], /liˈθæl ɪ ti/, le·thal·ness, noun
  • le·thal·ly, adverb
  • hy·per·le·thal, adjective
  • non·le·thal, adjective
  • non·le·thal·ly, adverb
  • sem·i·le·thal, adjective

Words Nearby lethal

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How to use lethal in a sentence

British Dictionary definitions for lethal

lethal

/ (ˈliːθəl) /


adjective
  1. able to cause or causing death

  2. of or suggestive of death

Origin of lethal

1
C16: from Latin lēthālis, from lētum death

Derived forms of lethal

  • lethality (liːˈθælɪtɪ), noun
  • lethally, adverb

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