sa ‧ dis ‧ m /ˈseɪdɪz ə m/ BrE AmE noun [uncountable]
[ Date: 1800-1900 ; Language: French ; Origin: sadisme , from the Marquis de Sade (1740-1814), French writer who described cruel sexual practices ]
1 . behaviour in which someone gets pleasure from hurting other people or making them suffer ⇨ masochism :
There seemed to be an element of sadism in the training regime.
2 . when someone gets sexual pleasure from hurting someone ⇨ masochism