Ofnid, n. terror, dread, fear
Ofnog, a. fearful, timorous
Ofnol, a. tending to frighten
Ofnus, a. fearful, timorous
Ofnusrwydd, n. fearfulness
Ofydd, n. philosopher
Ofyddfardd, n. scientific bard
Offeiriad, n. minister, priest
Offeiriadaeth, n. a priesthood
Offeiriadol, a. priestly