nastiness

Plural: nastinesses

Noun

• a state characterized by foul or disgusting dirt and refuse
• malevolence by virtue of being malicious or spiteful or nasty
• the quality of being unpleasant
  • "I flinched at the nastiness of his wound"
• Lack of cleanliness.
• Dirt, filth.
• Indecency; corruption; unkindness, meanness, spite, harshness, cruelty.
• Unpleasantness, disagreeableness (to the senses).
• A nasty action, object, quality, etc. (all senses of nasty).

Synonyms

bitchiness, cattiness, filth, filthiness, foulness, spite, spitefulness

Antonyms

niceness