perspicacious adj
1. 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: sagacious, sapient]
2. mentally acute or penetratingly discerning; "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" [syn: clear-eyed, clear-sighted]

Perspicacious \Per`spi*ca"cious\, 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.
2. Fig.: Of acute discernment; keen. -- Per`spi*ca"cious*ly, adv. -- Per`spi*ca"cious*ness, n.

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