abolitionistEnglishOxford Dictionary of Englishabolitionist /ˌabəˈlɪʃənɪst / ▸ noun a person who favours the abolition of a practice or institution, especially capital punishment or (formerly) slavery: [as modifier] the abolitionist movement. – DERIVATIVES abolitionism /ˌabəˈlɪʃənɪz(ə)m / noun