adjective

lethal

lethal, deadly, fatal

The snake's venom is lethal.

The snake's venom is lethal.

He received a lethal dose of the drug.

He received a lethal dose of the drug.

((sth.)) is lethal ((to sb./sth.)) (sth.) is deadly (to sb./sth.) The poison is lethal to humans.

Synonyms: deadly, fatal, mortal; Antonyms: harmless, nonlethal

From Latin 'letalis' (deadly), from 'letum' (death).

Think of the River Lethe in Greek mythology, the river of forgetfulness in the underworld. Drinking from it caused a 'death' of memory.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.