Nastiness

n.

1.

The quality or state of being nasty; extreme filthness; dirtiness; also, indecency; obscenity. The nastiness of Plautus and Aristophanes. - Dryden.

Noun	1.	nastiness - a state characterized by foul or disgusting dirt and refuse Synonyms: filthiness, foulness, filth
	2.	nastiness - malevolence by virtue of being malicious or spiteful or nasty Synonyms: bitchiness, cattiness, spite, spitefulness
	3.	nastiness - the quality of being unpleasant; "I flinched at the nastiness of his wound" Antonyms: niceness - the quality of nice

filth, filthiness, foulness, unsanitariness