sagacious |səˈgā sh əs|…adjective…having or showing keen mental discernment and good judgment; shrewd : they were sagacious enough to avoid any outright confrontation. See note at sensible .

wise, clever, intelligent, knowledgeable, sensible, sage; discerning, judicious, canny, perceptive, astute, shrewd, prudent, thoughtful, insightful, perspicacious; informal streetwise, savvy; formal sapient. ANTONYMS foolish.

Hey, I just love this word! Sagacious! How many Biblical sentences can we make with it? Try it!