English form, used in the Authorized Version of the Bible (alongside the Latin form Timotheus), of the Greek name Timotheos, from timē ‘honour’ + theos ‘god’. This was the name of a companion of St Paul; according to tradition, he was stoned to death for denouncing the worship of Diana. It was not used in England before the Reformation but has been in steady use since the 18th century.
English (very common in England, especially in the south Midlands, and in Wales) and German (especially northwestern Germany): patronymic from the personal name Adam. In the U.S. this form has absorbed many patronymics and other derivatives of Adam in languages other than English. (For forms, see Hanks and Hodges 1988.)