意いを尽つくす

expression, godan verb (-su)

fully express one's feelings; say everything on one's mind

Used when someone conveys their thoughts or emotions completely, leaving nothing unsaid. Often implies a thorough or heartfelt expression.

• 彼かれは手て紙がみに意いを尽つくして感かん謝しゃの気き持もちを伝つたえた。

  He fully expressed his gratitude in the letter.

• 会かい議ぎでは意いを尽つくして意い見けんを述のべた。

  At the meeting, I said everything that was on my mind.