oathbreach

The story

1. Old English · inherited fromāþbriċe
2. Middle English · inherited fromothbreche
3. English todayoathbreach

From Middle English othbreche, from Old English āþbriċe, āþbryċe (“the breaking of an oath, perjury”), equivalent to oath + breach. Compare West Frisian eedbrek (“perjury”), Dutch eedbreuk (“breach of an oath”), German Low German Eedbröök (“the breach of an oath”), German Eidbruch (“the breaking of an oath”).