nastiness

noun

1. a state characterized by foul or disgusting dirt and refuse

   noun.state

   Synonyms filth filthiness foulness

   Source: WordNet 3.0

2. malevolence by virtue of being malicious or spiteful or nasty

   noun.attribute

   Synonyms bitchiness cattiness spite spitefulness

   Source: WordNet 3.0

3. the quality of being unpleasant

   noun.attribute

   Examples

   I flinched at the nastiness of his wound.

   Synonyms unpleasingness

   Antonyms niceness

   Source: WordNet 3.0

4. The quality or state of being nasty; extreme filthness; dirtiness; also, indecency; obscenity.

   noun

   Source: webster1913