IPA: /lɛˈθælɪti/
KK: /lɛˈθælɪti/
The quality or state of being able to cause death or serious harm.
The lethality of the poison was higher than expected, leading to immediate medical intervention.
Lethality → It is formed from "lethal" (from Latin *letalis*, meaning deadly) and the suffix "-ity" (meaning the state or quality of). The word "lethality" refers to the quality or state of being deadly.
Think of 'lethal' meaning deadly, and remember that 'lethality' describes the quality of being deadly.