N-UNCOUNT 施虐癖;施虐欲 Sadism is a type of behaviour in which a person obtains pleasure from hurting other people and making them suffer physically or mentally.
Psychoanalysts tend to regard both sadism and masochism as arising from childhood deprivation. 精神分析学家往往认为施虐狂和受虐狂都是由于儿时缺乏关爱造成的。