nastiness

(noun) a state characterized by foul or disgusting dirt and refuse. Synonyms: filth, filthiness, foulness.

(noun) malevolence by virtue of being malicious or spiteful or nasty. Synonyms: cattiness, bitchiness, spite, spitefulness.

(noun) the quality of being unpleasant. Example: "I flinched at the nastiness of his wound."