is a specific kind of: conceive of, envisage, ideate, imagine.

see also: concoct, dream up, hatch, think of, think up.

derivation: dream, dreaming | air castle, castle in Spain, castle in the air, daydream, daydreaming, oneirism, reverie, revery | woolgathering | daydreamer, woolgatherer | lotus-eater, stargazer | dreamer, escapist, wishful thinker | dreamer, idealist.