noetic (adj.)

• bright
• cerebral
• cogitative
• cognitive
• conceptive
• conceptual
• contemplative
• deliberative
• discursive
• ideational
• intellectual
• intelligent
• internal
• introspective
• knowing
• meditative
• mental
• musing
• pensive
• phrenic
• pondering
• prehensive
• psychic
• rational
• reasonable
• reasoning
• reflecting
• reflective
• ruminant
• ruminative
• sane
• sensible
• serious
• sober
• sophic
• speculative
• spiritual
• strong-minded
• subjective
• thinking
• thought
• thoughtful
• understanding
• wistful