The term 'more shrewd' can be defined as having a greater degree of intelligence, wisdom, and cunning. This can be expressed in various ways, such as being cannier (7 letters), cleverer (8 letters), FOXIER (6 letters), slier (5 letters), SMARTER (7 letters), slyer (5 letters), CAGIER (6 letters), cuter (5 letters), sager (5 letters), and headier (7 letters). Each of these words implies a higher level of shrewdness than the one before it.