Source : Webster's Revised Unabridged Dictionary (1913)

Astute \As*tute"\, a. [L. astutus, fr. astus craft, cunning;
   perh. cognate with E. acute.]
   Critically discerning; sagacious; shrewd; subtle; crafty.

   Syn: Keen; eagle-eyed; penetrating; skilled; discriminating;
        cunning; sagacious; subtle; wily; crafty. {As*tute"ly},
        adv. -- {As*tute"ness}, n.

Source : WordNet®

astutely
     adv : in a shrewd manner; "he invested his fortune astutely" [syn:
            {shrewdly}, {sagaciously}, {sapiently}]