Definify.com
Webster 1828 Edition
Shrewdness
SHREWD'NESS
,Noun.
             1. Sly cunning; archness.
                   The neighbors round admire his shrewdness. Swift.
           2. Sagaciousness; sagacity; the quality of nice discernment.
           3. Mischievousness; vexatiouness. [Not in use.]