Pronunciation IPA (key): /ˈseɪdɪst/ or /ˈsædist/ Audio (UK)(file) Audio (US)(file) Noun Singular sadist Plural sadists (countable) A sadist is someone who enjoys causing pain or cruelty to others. Related words sadism This short entry needs someone to make it better. You can help Wiktionary by adding to it.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads