Astute
(ADJ) sharp-minded; very clever
Acute
(ADJ) keen-minded; sharp
Discerning
(ADJ) able to judge people and situations clearly
Erudite
(ADJ) wise due to much reading and studying; scholarly
Incisive
(ADJ) decisive; keen and directly to the point
Ingenious
(ADJ) very clever or inventive
Judicious
(ADJ) showing wisdom in judging people and situations
Perspicacious
(ADJ) using wise judgement; sharp-minded
Prudent
(ADJ) careful, cautious, and wise
Sagacious
(ADJ) wise
Savvy
(ADJ) smart; informed
Shrewd
(ADJ) insightful; clever