BRUTALITY
brutality, barbarity, barbarism, savagery
(noun) a brutal barbarous savage act
ferociousness, brutality, viciousness, savagery
(noun) the trait of extreme cruelty
Source: WordNet® 3.1
Etymology
Noun
brutality (plural brutalities)
The state of being brutal.
A cruel or savage act.
The use of excessive physical force, often in the form of violence.
Source: Wiktionary
Bru*tal"i*ty, n.; pl. Brutalities. Etym: [Cf. F. brutalité.]
1. The quality of being brutal; inhumanity; savageness; pitilessness.
2. An inhuman act.
The . . . brutalities exercised in war. Brougham.
Source: Webster’s Unabridged Dictionary 1913 Edition