lethal applies to something that is bound to cause death or exists for the destruction of life.

LETHAL definition: of, relating to, or causing death; deadly; fatal: a lethal dose. See examples of lethal used in a sentence.

Add to word list able to cause or causing death; extremely dangerous: a lethal weapon (Definition of lethal from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of lethal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Aug 15, 2025 · lethal (plural lethals) Any weapon that causes death. antonym Antonym: non-lethal (genetics) An allele that causes the death of the organism that carries it.

A substance that is lethal can kill people or animals. ...a lethal dose of sleeping pills. ...chemicals lethal to fish and aquatic mammals.

1. Causing or capable of causing death: a lethal weapon. See Synonyms at fatal. 2. Extremely harmful; devastating: accusations lethal to the candidate's image.

Lethality (also called deadliness or perniciousness) is how capable something is of causing death. Most often it is used when referring to diseases, chemical weapons, biological weapons, or their toxic …

fatal: a lethal weapon; a lethal injection. fatal: a lethal weapon; a lethal dose. made to cause death: a lethal chamber; a lethal attack. causing great harm or destruction: The disclosures were lethal to his …

The adjective lethal means Having the potential to cause death, serious harm, or fatal consequences.