IPA: /ˌæntiˈvaɪələns/
KK: /æntiˈvaɪələns/
Opposing or acting against violence.
The community organized an antiviolence campaign to promote peace.
Antiviolence → It is formed from "anti-" (meaning against) and "violence" (from Latin "violentia", meaning force or violence). The word "antiviolence" means against violence or opposing violent behavior.
Think of being 'against' ('anti-') force or harm ('violence') — that's why antiviolence means opposing violence.