forthy

The story

1. Old English · inherited fromforþȳ
2. Middle English · inherited fromforthy
3. English todayforthy

From Middle English forthy, from Old English forþȳ, for þȳ þe, forþon (“because, since”), from for + þȳ, þon (“by that, therefore”), instrumental case of þæt (“that”); Cognate with Yola farthoo (“why”), Old Norse fyrir því (at) (Danish & Norwegian fordi (“because”), Swedish för att). More at for, the, that.