Ysteliad, n. a straining out
Ystem, n. a base, a stem
Yster, n. what is ardent
Ysteraig, a. ardent
Ysterciad, n. a jerking out
Ystercian, v. to be jerking
Ystercio, v. to jerk out
Ysterlewyn, n. radiation
Ystern, n. what is ardent: a. of ardent tendency
Ysteru, v. to render ardent