early 14c. (mid-13c. in Anglo-Latin), from Old French atorné "(one) appointed," past participle of aturner "to decree, assign, appoint," from atorner (see attorn). The legal Latin form attornare influenced the spelling in Anglo-French. The sense is of "one appointed to represent another's interests."In English law, a private attorney was one appointed to act for another in business or legal affairs (usually for pay); an attorney at law or public attorney was a qualified legal agent in the courts of Common Law who prepared the cases for a barrister, who pleaded them (the equivalent of a solicitor in Chancery). So much a term of contempt in England that it was abolished by the Judicature Act of 1873 and merged with solicitor.The double -t- is a mistaken 15c. attempt to restore a non-existent Latin original. Attorney general first recorded 1530s in sense of "legal officer of the state" (late 13c. in Anglo-French), from French, hence the odd plural (subject first, adjective second).