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 ]