Areithydd, n. an orator

Aren, n. a kidney

Areuledd, n. serenity

Arf, n. a weapon, tool

Arfaeth, n. design, intent

Arfaethiad, n. a purposing

Arfaethol, a. intentional

Arfaethu, to design, to purpose

Arfaethus, a. designing

Arfaethwr, n. a designer