Ysglyf, n. what seeks for prey
Ysglyfaeth, n. depredation; prey, spoil
Ysglyfaethiad, n. a depredating
Ysglyfaethu, v. to depredate, to spoil
Ysglyfiad, n. a depredator
Ysglyfio, v. to depredate, to prey on
Ysglymu, v. to form a knot
Ysgoad, n. a starting aside
Ysgoegyn, n. a coxcomb
Ysgog, n. motion, stir