Select the most appropriate one-word substitution for the given group of words.

Deriving pleasure from inflicting pain on others

Sadism

The most appropriate one-word substitution for "deriving pleasure from inflicting pain on others" is sadism.

• Cruel means causing pain or suffering to others, but it does not necessarily imply pleasure.
• Inhumane means lacking compassion or pity for others, but it does not necessarily imply pleasure.
• Psychopath is a personality disorder characterized by a lack of empathy and remorse, but not all psychopaths are sadists.

The word sadism comes from the name of the Marquis de Sade, a French aristocrat who was known for his writings about sexual sadism. Sadism is a form of sexual pleasure that is derived from inflicting pain or humiliation on others. It is a serious mental disorder that can lead to violence and abuse.