The Collaborative International Dictionary
overemphatic
overemphatic \overemphatic\ Excessively emphatic.
Wiktionary
overemphatic
a. Excessively emphatic, particularly in musical or theatrical interpretation
Usage examples of "overemphatic".
They moved slowly, carefully, ever aware that a single overemphatic hoofbeat might crack something loose underfoot and send them plummeting to the white water below.
The doctor had not noticed her flushed cheeks, her erratic attention, her tendency to trip over stones, the overemphatic gestures of her hands, and the slight strangulation of her voice.