decapitate
Word family
- decapitationnounC2
Synonym discussion
Sense: verb/1
Decapitate and behead both mean removing someone's head, but decapitate is usually more formal and often appears in historical writing, reports, or horror fiction. Execute is broader: a person can be executed by hanging, shooting, or other methods, so it does not tell you how the killing happened. Guillotine is even narrower, because it refers to killing with a specific machine. Dismember means cutting a body into pieces and does not focus on the head alone. You might read that a king was decapitated after a trial, but a criminal could be executed without being decapitated.
Etymology
Decapitate comes from late Latin decapitare, built from de- meaning 'off' and caput meaning 'head'. It reached English through French and learned Latin use, which is why it sounds more formal than the shorter verb behead.