IPA: //ˌʌltrəˈvaɪələns//
KK: /ˈʌltrəˌvaɪələns/
Extreme and unnecessary violence, often done for excitement or entertainment rather than for a specific reason.
The film was criticized for its portrayal of ultraviolence, which some viewers found disturbing.
Ultraviolence → It is formed from "ultra-" (meaning beyond) and "violence" (from Latin "violentia", meaning force or strength). The word "ultraviolence" refers to violence that goes beyond the normal or expected levels.
Think of 'beyond' ('ultra-') the usual 'force' or 'strength' ('violentia') to remember that 'ultraviolence' means extreme or excessive violence.
No commonly confused words.