- 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.
Origin of lethal
SynonymsSee more synonyms for lethal on Thesaurus.com
Examples from the Web for lethality
But the Boston bombings are still somewhat unusual for their lethality and success in America.How U.S. Cities Can Protect Themselves Against Bombing Attacks
April 17, 2013
But the volatility of the Syria situation and the lethality of the weapons involved justify such an initiative.Seize Syria's Chemical Supply Before It's Too Late
January 31, 2013
True, the study strongly demonstrates the lethality of obesity.CDC Researchers Find Lower Mortality Rates Among Overweight People
January 3, 2013
There is a lot that could be done to reduce the frequency and lethality of such crimes.The Myths that Enable Gun Tragedies
December 16, 2012
People are fascinated by drones; the precision of their lethality makes them seem more sinister than conventional weapons.Daniel Klaidman on the Mind of a Drone Strike Operator
June 8, 2012
- able to cause or causing death
- of or suggestive of death
Word Origin and History for lethality
1580s, from Late Latin lethalis, alteration of Latin letalis "deadly, fatal," from letum "death," of uncertain origin. Form altered in Late Latin by association with lethe hydor "water of oblivion" in Hades in Greek mythology, from Greek lethe "forgetfulness."
- Capable of causing death.
- Of, relating to, or causing death.