conceptual (adj.)

• bright
• cerebral
• cogitative
• cognitive
• conceptive
• contemplative
• creative
• deliberative
• discursive
• fanciful
• fecund
• fertile
• germinal
• ideal
• ideational
• ideological
• imaginative
• ingenious
• inspired
• intellectual
• intelligent
• internal
• introspective
• inventive
• knowing
• meditative
• mental
• musing
• noetic
• notional
• original
• originative
• pensive
• phrenic
• pondering
• pregnant
• prehensive
• productive
• prolific
• psychic
• rational
• reasonable
• reasoning
• reflecting
• reflective
• ruminant
• ruminative
• sane
• seminal
• sensible
• serious
• shaping
• sober
• sophic
• speculative
• spiritual
• strong-minded
• subjective
• teeming
• theoretical
• thinking
• thought
• thoughtful
• understanding
• visioned
• wistful