intelligent (adj.)

• acute
• adroit
• alert
• all-knowing
• apperceptive
• apprehensive
• apt
• astute
• aware
• brainy
• bright
• brilliant
• canny
• cerebral
• clever
• cognizant
• comprehending
• conceptive
• conceptual
• conscious
• consequent
• cunning
• discerning
• discursive
• docile
• enlightened
• erudite
• facile
• formable
• gifted
• ideational
• impressionable
• ingenious
• insightful
• intellectual
• internal
• keen
• knowing
• knowledgeable
• logical
• malleable
• mental
• mindful
• moldable
• motivated
• noetic
• omniscient
• perceptive
• percipient
• perspicacious
• phrenic
• plastic
• pliable
• prehensile
• psychic
• quick
• quick-witted
• rational
• ready
• reasonable
• reasoning
• receptive
• sagacious
• sage
• sane
• sensible
• sharp
• shrewd
• smart
• sophic
• sound
• spiritual
• strong-minded
• subjective
• susceptible
• teachable
• thinking
• understanding
• willing
• wise