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.

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

Words nearby lethal

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

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), noun lethally, adverb

Word Origin for lethal

C16: from Latin lēthālis, from lētum death

Medical definitions for hyper-lethal

lethal
[ lē′thəl ]

adj.

Capable of causing death.
Of, relating to, or causing death.