Perfedd, n. centre; entrails
Perffaith, a. perfect, complete
Perffeithrwydd, n. perfection
Perffeithiad, n. a perfecting
Perffeithio, v. to perfect
Perging, n. a screen, a settle: a. skreening, sheltering
Peri, n. a causation, a cause: v. to cause; to bid
Periad, n. a causing; a bidding
Periagur, n. a causer, a cause
Periant, n. a causation