From Middle English forthy, from Old English forþȳ, for þȳ [þe] (“because [that]”), forþon (“because, since”), from for + þȳ, þon (“by that, therefore”), instrumental case of þæt (“that”); compare Old Norse fyrir því (at) (Danish & Norwegian fordi (“because”), Swedish för att). More at for, the, that.
forthy (not comparable)
- (obsolete) Therefore.
- (obsolete) For this, for this reason; on this account.
- 1579, Immeritô [pseudonym; Edmund Spenser], “May. Aegloga Quinta.”, in The Shepheardes Calender: […], London: […] Hugh Singleton, […], OCLC 606515406; republished as The Shepheardes Calender […], London: […] Iohn Wolfe for Iohn Harrison the yonger, […], 1586, OCLC 837880809:
- Thomalin, have no care for-thy.