nastiness
noun [ U ] uk/ˈnɑː.sti.nəs/ us/ˈnæs.ti.nəs/
肮脏; 丑陋 | 黑暗面、阴暗面
the quality of being bad or very unpleasant
She was wary of the nastiness of politics. 她对政治的黑暗面很有戒心。
A chef reveals the nastiness inside upscale restaurant kitchens: old fish, grimy meat, and rivers of butter. 一位厨师揭露了高档餐厅厨房里的脏乱不堪：过期的鱼、沾满污垢的肉和肆流成河的黄油。
不友善的行为，恶毒品行
unkind behaviour or an unkind character
As well as an essential goodness in our souls, there might also be a streak of downright nastiness or evil. 我们灵魂中除了本质的善良外，还可能存在一丝彻头彻尾的肮脏或邪恶。
Sometimes that nastiness is simply unbridled religious bigotry. 有时，这种肮脏只是肆无忌惮的宗教偏见。
失礼，鲁莽
the quality of being rude and offensive
For me it is the nastiness of the comment that is the problem. 对我来说，问题在于评论的口出不逊。
There's a danger of sarcasm becoming nastiness. 讽刺有可能会变成恶言恶语。
See: nasty