Common terms used for people with particular behaviour patterns or beliefs, taking off from the text with the word ‘sadist’.

Sadist is a person who derives happiness from hurting someone or giving pain to someone. Sadistic personality disorder is a term for individuals who derive pleasure from suffering of others. In other words, sadist is someone who enjoys inflicting pain on others, they like to bully others is considered as sadist. Anyone who tortures another human being is sadist.