ideational (adj.)

• bright
• conceptive
• conceptual
• creative
• discursive
• fanciful
• fecund
• fertile
• germinal
• ideal
• ideological
• imaginative
• ingenious
• inspired
• intellectual
• intelligent
• inventive
• knowing
• noetic
• notional
• original
• originative
• pregnant
• productive
• prolific
• rational
• reasonable
• sane
• seminal
• sensible
• shaping
• sophic
• strong-minded
• teeming
• theoretical
• understanding
• visioned