1. acutely insightful and wise (Freq. 1) - much too perspicacious to be taken in by such a spurious argument - observant and thoughtful, he was given to asking sagacious questions - a source of valuable insights and sapient advice to educators • Syn: perspicacious, sapient • Similar to: wise • Derivationally related forms: sapience (for: sapient), sagaciousness, perspicaciousness (for: perspicacious), perspicacity (for: perspicacious) 2. skillful in statecraft or management - an astute and sagacious statesman • Similar to: politic • Derivationally related forms: sagaciousness, sagacity