The meaning of KILLER is one that kills. How to use killer in a sentence.

1. One that kills: a disease that was a killer of thousands; a killer of new ideas. 2. Slang Something that is extremely difficult to deal with or withstand: an exam that was a real killer.

KILLER meaning: 1. someone who kills another person: 2. something that kills people, especially a disease or other…. Learn more.

Definition of killer noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A killer is a person who has killed someone, or who intends to kill someone. The police are searching for his killers. He's a psychopath, a killer.

1 day ago · More than 30 bodies, each with vastly different manners of death, were dredged up in Houston-area bayous this year — and locals fear a burgeoning serial killer may be on the loose.

12 hours ago · More than 30 bodies have been pulled from Houston-area bayous in 2025 — including three just last week — but officials are still disputing it’s the work of a serial killer.

What is a basic definition of killer? A killer is a person or thing that kills, meaning they end lives. Killer is also used in slang to mean something that is devastating or exhausting. Additionally, …

KILLER meaning: 1 : a person or thing that kills someone or something; 2 : something that is very difficult

noun the causal agent resulting in death “heart disease is the biggest killer in the United States” synonyms: cause of death see more