The story
- Old English · inherited frommuhte
- Middle English · inherited frommoghte
- English todaymought
Inherited from Middle English moghte, from Old English muhte, late variant of meahte, mihte (“might”) due to the influence of the infinitive *mugan, itself an analogical remodelling of magan (“to be capable, to be able to”) after dugan (“to be useful”).
Etymology from Wiktionary, CC BY-SA 4.0.