Yswadan, n. a stroke, a flap
Yswail, n. what ejects
Ysweilydd, n. one who casts out, a brawler
Yswain, n. an esquire, page; armour bearer
Yswatiad, n. a squatting
Yswatio, v. to squat
Yswbwb, n. a hubbub
Yswbwbio, v. to rumble
Ysweiliad, n. a brawling
Ysweilyd, n. a brawler