Definitions
1.NounLack of cleanliness.
2.NounDirt, filth.
3.NounIndecency; corruption; unkindness, meanness, spite, harshness, cruelty.
4.NounUnpleasantness, disagreeableness (to the senses).
5.NounA nasty action, object, quality, etc. (all senses of nasty).