The term 'Acts of Atrocious Cruelty' can be summed up as 'Inhumanities', which is a 12 letter word. Inhumanities refers to acts that are considered to be cruel and inhumane, such as torture, genocide, and other forms of violence. These acts are often committed against vulnerable populations, such as children, the elderly, and those who are unable to defend themselves. Inhumanities are considered to be some of the worst crimes against humanity and are universally condemned.