Ideogrammic compound (會意) – originally (in oracle script) the antler of a buck (at bottom), indicating a savage attack. Subsequently significantly simplified and abstracted: in seal script analyzed as 日 + 出 + 廾, while in current form rather 日 + 共 + 水 (similar to unrelated 異); compare bottom component to bottom right of 様.
Han character 
暴 (radical 72 日+11, 15 strokes, cangjie input 日廿金水 (ATCE), four-corner 60132)
Derived characters 
- KangXi: page 499, character 29
- Dai Kanwa Jiten: character 14137
- Dae Jaweon: page 868, character 35
- Hanyu Da Zidian: volume 2, page 1532, character 15
- Unihan data for U+66B4
暴 (Yale bou6)
Usage notes 
In Taiwan, 暴 may be pronounced pù in the compound 暴露.