Definition, Meaning & Synonyms

killer

noun

/ˈkɪlər/

Definition

A person or thing that kills or causes death.

Examples

She was known as a killer because of the way she handled her opponents in the ring.
The new software proved to be a killer app that transformed the market.

Meaning

The term ‘killer’ can refer to someone who has intentionally taken the life of another person, or in a broader sense, it can describe anything that is extremely effective or causes destruction, like a virus or poison.