The definition of perspicacious is being perceptive with clear vision and good judgment.(adjective)
An example of something perspicacious is a CEO who guessed that the company needed a new direction.
See perspicacious in Webster's New World College Dictionary
Origin: < L perspicax (gen. perspicacis) < perspicere, to see through: see perspective
See perspicacious in American Heritage Dictionary 4
Origin: From Latin perspicāx, perspicāc-
Origin: , from perspicere, to look through; see perspective.
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