1. (a.) Consisting of, or conveying, notions or ideas; expressing abstract conceptions.

2. (a.) Existing in idea only; visionary; whimsical.

3. (a.) Given to foolish or visionary expectations; whimsical; fanciful; as, a notional man.

Gothic abstract academic arbitrary armchair baroque bizarre brain-born capricious conceptive conceptual conjectural cranky creative crotchety dream-built esemplastic extravagant fancied fanciful fancy-born fancy-built fancy-woven fantasied fantasque fantastic fecund fertile fictive flaky florid freakish germinal grotesque harebrained humorsome hypothetic ideal ideational ideative ideological illusory imaginary imaginational imaginative imagined impractical ingenious inspired inventive kinky maggoty moody moot motiveless nonexistent original originative outlandish petulant postulatory pregnant preposterous productive prolific quirky rococo seminal shadowy shaping speculative supposititious teeming temperamental theoretical unactual unreal unreasonable unrestrained vagarious vagrant visional visioned wanton wayward whimsical wild