rageaholic
/ˌreɪdʒəˈhɒlɪk/(also rage-aholic, rage-a-holic) originally and chiefly US
noun
A person prone to extreme (and frequently unprovoked) outbursts of rage.
adjective
Designating or characteristic of a rageaholic.
Origin
1980s; earliest use found in Newsday. From rage + -aholic.