self-abuse 
noun [mass noun]
1Behaviour which causes damage or harm to oneself: he drove us stupid with tales of his past self-abuse...
- The fun is all in the self-absorbed self-abuse, the modern rules of attraction and dating, and a complete over-the-top obsession with music.
- As for anything in a multiplex, forget it, unless you're into aural self-abuse.
- Today, back to the self-abuse I call ‘two-a-days’ at the gym.
1.1 euphemistic Masturbation: prostitutes were thought preferable to the guilt and fear induced by self-abuse
- life peeress
- life plant
- life policy
- life preserver
- life-preserving
- lifer
- life raft
- life rate
- life regiment
- liferent
- liferented
- liferenter
- liferent escheat
- liferentrices
- liferentrix
- liferentrixes
- life ring
- life rocket
- life root
- life-save
- lifesaver
- life-saving
- life savings
- life-saving station
- life science