IPA: /ˈhɪt.mæn/
KK: /ˈhɪtˌmæn/
A person who is hired to kill someone, often for money or as part of organized crime.
The police arrested a hitman who was planning to carry out a contract killing.
Hitman → The word is formed from "hit" (originating from Old English "hyttan", meaning to strike or to come into contact) and "man" (from Old English "mann", meaning a human being). A hitman is a person who strikes or kills another person, typically for hire.
Think of someone who 'strikes' ('hit') another person, and 'man' just refers to a person. This helps you remember that a hitman is someone who is hired to strike down another.