Erchryniad, n. agitating
Erchrynu, v. to agitate
Erchwyn, n. a side or stead
Erchwynedig, a. transitive
Erchwyniad, n. transition
Erchwynio, v. to make a transit
Erchwys, n. a pack of hounds
Erchyll, a. ghastly, horrible
Erchylldod, n. ghastliness
Erchyllrwydd, n. frightfulness