In verbs inherited from OE:(a) From OE ā-: a-biden, a-breken, a-fallen, a-reren, a-risen, a-senden, a-waken, a-winnen, and many others. (b) From OE on-: a-biden (also an-biden), ppl. a-knoue(n (also……
A derivational prefix which appears in more than 70 words inherited from OE: oferhudiȝen, ofermetto, oferten, overdriven, overet, overgangen, overhelen v.(2), overhoue, oversitten, oversleie,……