Unpleasantness, disagreeableness (to the senses).
Lack of cleanliness.
Indecency; corruption; unkindness, meanness, spite, harshness, cruelty.
Dirt, filth.
A nasty action, object, quality, etc. (all senses of nasty).
Excessive fondness for animals.
Human sexual attraction toward or sexual interaction with non-human animals.