https://www.merriam-webster.com/dictionary/lethal
lethal applies to something that is bound to cause death or exists for the destruction of life.
https://www.dictionary.com/browse/lethal
LETHAL definition: of, relating to, or causing death; deadly; fatal: a lethal dose. See examples of lethal used in a sentence.
https://dictionary.cambridge.org/dictionary/english/lethal
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 P
https://www.collinsdictionary.com/dictionary/english/lethal
A substance that is lethal can kill people or animals. ...a lethal dose of sleeping pills. ...chemicals lethal to fish and aquatic mammals.
https://www.thefreedictionary.com/lethal
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.
https://www.oxfordlearnersdictionaries.com/us/definition/english/lethal
Definition of lethal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
https://www.wordreference.com/definition/lethal
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 di
https://en.wiktionary.org/wiki/lethal
Jan 20, 2026 · Adjective lethal (comparative more lethal, superlative most lethal) Of, pertaining to, or causing death; deadly; mortal; fatal.
https://www.yourdictionary.com/lethal
Lethal definition: Causing or capable of causing death.
https://www.betterwordsonline.com/dictionary/lethal
Having the potential to cause death, serious harm, or fatal consequences. See example sentences, synonyms, and etymology for the adjective lethal.