astuteness

from WordNet (r) 3.0 (2006)

astuteness
    n 1: intelligence manifested by being astute (as in business
         dealings) [syn: {shrewdness}, {astuteness}, {perspicacity},
         {perspicaciousness}]
    2: the intellectual ability to penetrate deeply into ideas [syn:
       {astuteness}, {profundity}, {profoundness}, {depth},
       {deepness}]

from The Collaborative International Dictionary of English v.0.48

Astute \As*tute"\, a. [L. astutus, fr. astus craft, cunning;
   perh. cognate with E. acute.]
   Critically discerning; sagacious; shrewd; subtle; crafty.
   [1913 Webster]

   Syn: Keen; eagle-eyed; penetrating; skilled; discriminating;
        cunning; sagacious; subtle; wily; crafty.
        [1913 Webster] {As*tute"ly}, adv. -- {As*tute"ness}, n.
        [1913 Webster]