en
decapitationMeaning:
en
n. the action of cutting off the head of a person or animal
The coroner determined that the cause of death was decapitation.
Is decapitation painful?
Well, it's time for your decapitation. Don't you have any last words to say?
Sami suffered what's referred to as an internal decapitation. In other words, his skull was severed from his spine.