1. The state or quality of being obscene.

2. Indecency, lewdness, or offensiveness in behavior, expression, or appearance.

3. Something, such as a word, act, or expression, that is indecent or lewd.

4. Something that is offensive or repulsive to the senses: "What had once been a gentle hill covered with lush grass turned into a brown obscenity of bare earth and smoke" (Tom Clancy).