(adj) acutely insightful and wise, Syn. sagacious, sapient, Example: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
(adj) mentally acute or penetratingly discerning, Syn. perspicacious, clear-sighted, Example:too clear-eyed not to see what problems would follow; chaos could be prevented only by clear-sighted leadership; much too perspicacious to be taken in by so spurious an argument
a. [ L. perspicax, -acis, fr. perspicere to look through: cf. F. perspicace. See Perspective. ] 1. Having the power of seeing clearly; quick-sighted; sharp of sight. [ 1913 Webster ]
2. Fig.: Of acute discernment; keen. [ 1913 Webster ]
-- Per`spi*ca"cious*ly, adv. -- Per`spi*ca"cious*ness, n. [ 1913 Webster ]