barbarism, barbarity, brutality, enormity, outrage, savagery.
animosity, curiosity, ferocity, generosity, monstrosity, religiosity, velocity, viscosity.
creationist, recitations, recitativos.
Your query has returned 540 words, which include anagrams of atrocities as well as other shorter words that can be made using the letters included in atrocities.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.