mis·chief 
(mĭschĭf)
(mĭschĭf)n.
1. Behavior that causes annoyance or difficulty: tried to keep the kids from engaging in any mischief.
2.
a. Damage, destruction, or injury caused by a specific person or thing: the mischief done by a faulty gene.
b. Archaic A specific injury or harm done: "Instead of doing them a service, you meant to do them a mischief?" (Charles Dickens).
3. The inclination or tendency to play pranks or get into trouble: eyes that gleamed with mischief.
[Middle English mischef, from Old French meschief, misfortune, from meschever, to end badly : mes-, badly; see MIS-1 + chever, to happen, come to an end (from Vulgar Latin *capāre, to come to a head, from *capum, head, from Latin caput; see kaput- in the Appendix of Indo-European roots).]