Superlatively smart (6)
I believe the answer is:
wisest
(Other definitions for wisest that I've seen before include "Shrewdest" , "Showing the most knowledge and good judgment" , "Most judicious" , "Superlatively sage" , "Closest to Solomon" .)
I believe the answer is:
wisest
(Other definitions for wisest that I've seen before include "Shrewdest" , "Showing the most knowledge and good judgment" , "Most judicious" , "Superlatively sage" , "Closest to Solomon" .)