Beastliness/ˈbiːstlinəs/ Definition 1 of 2Pro Tip 1/3Negative Connotation Beastliness often implies behavior that's cruel or scary, not just animal-like. The bully's beastliness made the whole class uneasy. Pro Tip 2/3Emotionally Charged Using 'beastliness' can evoke strong emotions, showing you condemn the behavior. His beastliness during the argument horrified everyone. Pro Tip 3/3Visual Imagery The word can paint a vivid picture of someone acting wildly or monstrously. She recoiled from the beastliness of the raging man.