sagacious
From Longman Dictionary of Contemporary Englishsagacioussa‧ga‧cious /səˈɡeɪʃəs/ adjective formal INTELLIGENTable to understand and judge things very well SYN wise —sagaciously adverbExamples from the Corpussagacious• However, his deeply felt and meticulously researched rhetoric conveyed in all his books is hard hitting, provocative and sagacious.• This intense peering into nature had been consciously practiced by Redon and his sagacious words on the subject are worth repeating.Origin sagacious (1600-1700) Latin sagax “quick in understanding”