しきれない

cannot finish; cannot do completely

→ しきれる
verb · potential Rare #37,654
cannot finish; cannot do completely
JA: この量の仕事は今日中にしきれない。
EN: I can't finish this amount of work today.

感謝しきれない

I can’t thank you enough.

— 人生スイッチ (2014)

その絵の価値は評価しきれない

The value of that painting cannot be fully appreciated.

彼には感謝しきれない

I can’t thank him enough.