[1] : The Collaborative International Dictionary of English v.0.48

sapient \sa"pient\, a. l. sapiens, -entis, p. pr. of sapere to
   taste, to have sense, to know. see sage, a.
   wise; sage; discerning; -- often in irony or contempt.
   1913 webster

         where the sapient king
         held dalliance with his fair egyptian spouse. --milton.
   1913 webster

   syn: sage; sagacious; knowing; wise; discerning.
        1913 webster
see also:
sage 

[2] : WordNet (r) 2.0

sapient
     adj : acutely insightful and wise; "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, sagacious
see also:
perspicacious sagacious 

[3] : Moby Thesaurus II by Grady Ward, 1.0

44 moby thesaurus words for "sapient":
   authority, broad-minded, deep, discriminating, doctor, elder,
   elder statesman, erudite, great soul, guru, illuminate, intellect,
   intellectual, judicious, knowing, learned, lover of wisdom,
   mahatma, man of intellect, man of wisdom, mandarin, master,
   mastermind, mentor, oracle, philosopher, profound, prudent, rabbi,
   rishi, sage, sane, savant, scholar, scholarly, seer, sensible,
   starets, thinker, thinking, wise, wise as solomon, wise man,
   wise old man

Sapient >> S Words
Sapient, definition of term: Sapient
sapient_pag1.html