Criminal libel is a legal term, of English origin, which may be used with one of two distinct meanings, in those common law jurisdictions where it is still used. It is an alternative name for the common law offence which is also known (in order to distinguish it from other offences of libel) as "defamatory libel" or, occasionally, as "criminal defamatory libel". It is also used as a collective term for all offences which consist of the publication of some prohibited matter in a libel (in permanent form), namely defamatory libel, seditious libel, blasphemous libel and obscene libel.