per·spi·ca·cious 
/ˌpɚspəˈkeɪʃəs/ adjective
/ˌpɚspəˈkeɪʃəs/ adjective [more perspicacious; most perspicacious] formal : having or showing an ability to notice and understand things that are difficult or not obvious
▪ She considers herself a perspicacious [=shrewd, astute] judge of character. ▪ The critic made some perspicacious [=insightful] observations about the film.
▪ She considers herself a perspicacious [=shrewd, astute] judge of character. ▪ The critic made some perspicacious [=insightful] observations about the film.
— per·spi·ca·cious·ly adverb
— per·spi·cac·i·ty /ˌpɚspəˈkæsəti/ noun [noncount]
▪ her intellectual perspicacity
/ˌpɚspəˈkæsəti/ noun [noncount] ▪ her intellectual perspicacity
