He overacts his parts, and even Shakespeare will tell you how foolish a proceeding that is.

Most potent Lord, I do, and wonder at the Compliment,and yet I am not jealousI have so overacted the complaisant Husband, that I shall never fall into the other Extreme again.

But even while he did full justice to the precocious ability of Mazarin, the minister nevertheless bitterly complained that the violent measures adopted by the Queen-mother and her party rendered the prospect of a peace impossible; and that they attached too great an importance to the pending negotiations, and overacted their uneasiness on the subject of the King's health, and their terrors of the plague.

He overacted his zeal.