User blog comment:Gr8asb8/Word for curse?/@comment-35684696-20180531204005

English already has WARRY, from Old English wergian.

For a noun form we can us *WIRTH, reconstructed from the related Old English wyrgþu / wirgþu. From the same root as WARRY and WORRY, also wearg (vargr, the outlaw wolf) (Middle English: wari, so a modern warry (n.)) or wearh (this Northern variant becomes Middle English warwe, so a modern warrow (n.)). The /g/ here is almost consistently a /y/ sound instead of a /gh/ in most attestations, so while a *wirgth is possible (from wirhþu), I believe it is more liely that had this /g/ would have become /y/, then /i/ before finally collapsing between the /r/ and /th/. Feel free to keep the -gth ending if you believe the -hþu suffix was more likely.

On another note the noun is almost always used with drēogan in Old English, so if this formulaic phrase had continued into modern English, putting a curse on someone would be expressed as "dreeing a wirth."