極きわめ尽つくす

godan verb (-su)

do thoroughly; check through and through

Emphasizes exhaustive action: carrying something out to the very end, leaving no stone unturned. Often used with verbs of investigation, pursuit, or enjoyment.

• 彼かれはその問もん題だいを極きわめ尽つくした。

  He thoroughly investigated the problem.

• 人じん生せいの楽たのしみを極きわめ尽つくす