obscenity

n. obscene language; curse; crudity

Obscenity (in Latin obscenus, meaning "foul, repulsive, detestable", possibly derived from ob caenum, literally "from filth"). The term is most often used in a legal context to describe expressions (words, images, actions) that offend the prevalent sexual morality of the time.Despite its long formal and informal use with a sexual connotation, the word still retains the meanings of "inspiring disgust" and even "inauspicious; ill-omened", as in such uses as "obscene profits", "the obscenity of war", etc. It can simply be used to mean profanity, or it can mean anything that is taboo, indecent, abhorrent, or disgusting.
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Noun
1. the trait of behaving in an obscene manner
(synonym) lewdness, bawdiness, salaciousness, salacity
(hypernym) indecency
(hyponym) smuttiness, dirtiness
2. an offensive or indecent word or phrase
(synonym) vulgarism, dirty word
(hypernym) profanity
(hyponym) bawdry, bawdy
(class) shitless
3. an obscene act
(hypernym) indecency, impropriety

(n.)
That quality in words or things which presents what is offensive to chasity or purity of mind; obscene or impure lanquage or acts; moral impurity; lewdness; obsceneness; as, the obscenity of a speech, or a picture.
  

An elusive concept used in the context of criminal law to describe a publication which is illegal because it is morally corruptive. - (read more on Obscenity)