THESAURUS
brainstorm
absurd idea, afebrile delirium, automatic response, blind impulse, boutade, brain wave, brainchild, bright idea, bright thought, brilliant idea, capriccio, caprice, conceit, crank, craze, crazy idea, crotchet, deliriousness, delirium, drive, fad, fancy, fantastic notion, fantasy, flash, fleeting impulse, flimflam, fool notion, freak, freakish inspiration, good idea, gut response, harebrained idea, humor, impulse, incoherence, inspiration, instinct, involuntary impulse, kink, lingual delirium, maggot, megrim, natural impulse, notion, passing fancy, quick hunch, quirk, ranting, raving, reflex, sudden thought, toy, urge, vagary, wandering, whim, whim-wham, whimsy
ROGET THESAURUS
brainstorm
Imagination
VB
imagine, fancy, conceive, idealize, realize, dream, dream of, dream up, give to airy nothing a local habitation and a name, create, originate, devise, invent, coin, fabricate, improvise, strike out something new, set one's wits to work, strain one's invention, crack one's invention, rack one's brains, ransack one's brains, cudgel one's brains, excogitate,
brainstorm, give play, give the reins, give a loose to the imagination, give fancy, indulge in reverie, visualize, envision, conjure up a vision, fancy oneself, represent oneself, picture, picture-oneself, figure to oneself, vorstellen, float in the mind, suggest itself.