de ‧ cap ‧ i ‧ tate /dɪˈkæpəteɪt, dɪˈkæpɪteɪt/ BrE AmE verb [transitive]
[ Date: 1600-1700 ; Language: Late Latin ; Origin: decapitatus , from Latin caput 'head' ]
to cut off someone’s head ⇨ behead :
a decapitated body
—decapitation /dɪˌkæpəˈteɪʃ ə n, dɪˌkæpɪˈteɪʃ ə n/ noun [uncountable and countable]