Ysporthiant, n. sustenance
Yspwng, n. light tuft; sponge
Yspwysiad, n. impression
Yspydd, n. a jut or run out
Yspyddad, n. hawthron
Yssig, a. shattered, bruised
Yssigdod, n. contusion
Yssigiad, n. a crushing, a bruising
Yssigo, v. to bruise, to shatter, to crush; to quell
Ystac, n. a heap, a stack