Shrewd'ly, adv.
(shrūd'lŷ), adv. 1. In a vexatious, annoying or troublesome manner; vexatiously; sharply. [Obs.]
The obstinate and schismatical are like to think themselves shrewdly hurt by being cut from that body they chose not to be of. South.
Yet seemed she not to wince, though shrewdly pained. Dryden.
Sense 2. In a mischievous or injurious manner; mischievously. [Obs.]
This practice hath most shrewdly passed upon thee. Shak.
Sense 3. Archly; sagaciously; with good guess; as, he shrewdly suspected; he shrewdly observed.