lethal

/ˈliː.θəl/adjective

Strong or dangerous enough to kill a person or animal.

Example sentences

“The snake's bite can be lethal within hours.”
“Mixing those two cleaning products creates a lethal gas.”
“He received a lethal dose of the drug by mistake.”

Common pairs: lethal dose, lethal injection, lethal weapon. 'Fatal' describes something that actually caused death, while 'lethal' describes what can.

Synonyms for lethal

deadly

Antonyms

harmless
safe

Related words

lethargicLacking energy; slow and drowsy.listlessWithout energy or interest in anything.layoffThe act of letting workers go because of budget cuts or lack of work, not because they did anything wrong.loatheTo feel intense hatred or disgust for someone or something.laxNot careful or strict enough; careless about rules or standards.loathingA strong feeling of hatred or disgust.