savagery
n.the quality of being very cruel, violent, or brutal. It describes actions that are shocking and lack any sense of kindness or control.
n.the quality of being extremely cruel, violent, or lacking in restraint. Often used to describe physical violence or the harshness of a natural environment.
“The savagery of the attack shocked the whole city.”
“The documentary exposed the savagery of the conflict, showing how civilians were treated during the war.”
“The explorer described the savagery of the jungle, where the constant humidity and lack of clean water made survival nearly impossible for the unprepared.”
“Sonia Bellina's body was "abandoned" after "a murder of rare savagery", the family's lawyer says.”
From savage + -ry.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.