Trawaeth, n. a circumstance
Trawdd, n. a transit; a pass
Trawddysg, n. doctrine
Trawdd, n. advancement
Trawedig, a. disciplined
Trawedigaeth, n. discipline
Trawenu, v. to pass over
Trawiad, n. a surpassing; a rearing, an educating
Trawiadu, v. to educate
Trawiadur, n. an instructor