n. 25B6; noun
my mother tried to shut herself off from nastiness : UNPLEASANTNESS, disagreeableness, offensiveness, vileness, foulness.
her uncharacteristic nastiness : UNKINDNESS, unpleasantness, unfriendliness, disagreeableness, rudeness, churlishness, spitefulness, maliciousness, meanness, ill temper, ill nature, viciousness, malevolence; informal bitchiness, cattiness.
I abhor such nastiness : OBSCENITY, indecency, offensiveness, crudity, vulgarity, pornography, smuttiness, lewdness, licentiousness.