Strong's G4468 — ῥᾳδιουργία (noun)
rhadiourgia (rhad"-ee-ourg-ee'-a) n.
1. recklessness
2. (by extension) malignity
[from rhaidios (easy, i.e. reckless) and G2041]
KJV: mischief 
See also: G4467 
Occurrences: 1