insightful (adj.)

• all-knowing
• apperceptive
• apprehensive
• astute
• aware
• cognizant
• comprehending
• conscious
• discerning
• discriminating
• gnostic
• intelligent
• judicious
• knowing
• knowledgeable
• mindful
• omniscient
• penetrating
• perceptive
• percipient
• perspicacious
• prehensile
• sagacious
• sage
• sensible
• shrewd
• sophic
• understanding
• wise