extraordinarily large in size or extent or amount or power or degree; an enormous boulder; enormous expenses; tremendous sweeping plains; a tremendous fact in human experience; that a whole civilization should be dependent on technology- Walter Lippman; a plane took off with a tremendous noise

[ Syn: enormous ]

extraordinarily good or great ; used especially as intensifiers; a fantastic trip to the Orient; the film was fantastic!; a howling success; a marvelous collection of rare books; had a rattling conversation about politics; a tremendous achievement

[ Syn: fantastic , grand , howling , marvelous , marvellous , rattling , terrific , wonderful , wondrous ]

extreme in degree or extent or amount or impact; in a frightful hurry; spent a frightful amount of money

[ Syn: frightful , terrible , awful ]