vast

Universal Words adjective extremely large in area, size, amount, etc. SYNHUGE: a vast area of forest * a vast crowd * a vast amount of information * At dusk bats appear in vast numbers. * His business empire was vast. * In the vast majority of cases, this should not be a problem. * Your help made a vast difference. * We've hired a marquee at vast expense. vastness (written) noun [U,C]: the vastness of space