English: 1. habitational name from Adeney in Shropshire, named in Old English as Ēadwynna ey ‘island of a woman called Ēadwynn’. 2. English: from a Middle English pet form of Adam. Forms such as Adenet, Adinot, Addy, and Adey are all well attested. 3. Possibly an Americanized spelling of Norwegian Aadnøy, a habitational name from a farmstead so named, from Old Norse o̧rn ‘eagle’ + øy ‘island’.