nastiness

noun

1 my mother tried to shut herself off from reality and from nastiness:

unpleasantness, disagreeableness, offensiveness, vileness, foulness, unsavouriness, ugliness, squalor, filthiness, filth, pollution.

▷antonyms niceness, pleasantness.

2 he was bewildered by her uncharacteristic nastiness:

unkindness, unpleasantness, unfriendliness, disagreeableness, hostility, rudeness, churlishness, spite, spitefulness, malice, maliciousness, meanness, mean-spiritedness, ill temper, ill nature, bad temper, bad-temperedness, viciousness, ill humour, malevolence, venom, venomousness, malignancy, cantankerousness, cruelty, abusiveness;

informal bitchiness, cattiness.

▷antonyms niceness, kindness.

3 for some real nastiness this week, you had to watch ‘The Sex Hunters’:

obscenity, indecency, offensiveness, impropriety, indelicacy, crudity, vulgarity, grossness, pornography, smuttiness, smut, salaciousness, lewdness, licentiousness.

nastiness Oxford Dictionary of English