言いい過すぎる

ichidan verb, transitive verb

say too much; overstate; exaggerate

Used when someone speaks beyond what is appropriate, either by revealing too much or by making exaggerated claims. Often carries a negative nuance of going too far verbally.

• 彼かれは会かい議ぎで言いい過すぎて、後あとで後こう悔かいした。

  He said too much at the meeting and regretted it later.

• その表ひょう現げんは少すこし言いい過すぎだと思おもう。

  I think that expression is a bit of an exaggeration.