Added 9 October 2026 hostilities /hɑˈstɪlɪtiz/ noun Categories: ActionsUncommon Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about hostilities at Wordnik → Where our words come from → Fighting; acts of overt warfare. the outbreak of hostilities Related Words: fightingbelligerentfightercombatwarconflictfightbattlefieldbattleaggressiveviolencemilitary Back to today's word