Meaning of わりきる in Japanese

Definition of わりきる

わりきる(warikiru) 【割り切る ·割切る】

(v5r, vt) to find a clear solution; to come to a clean decision; to give a clear explanation
to divide

よわりきる(yowarikiru) 【弱り切る】

(v5r, vi) to faint; to be exhausted
彼は弱りきっていて、食欲がなかった。
He was weak as a rat, and had no appetite.