hacktivist Syllabification: (hack·tiv·ist)Pronunciation: /ˈhaktəˌvist/Definition of hacktivist noun a computer hacker whose activity is aimed at promoting a social or political cause. Derivatives hacktivismPronunciation: /-ˌvizəm/ noun Origin: 1990s: blend of hacker and activisthacktivist in other Oxford dictionaries Definition of hacktivist in the British & World English dictionary