immense◼◼◼(huge, gigantic, very large) adjective [UK: ɪ.ˈmens] [US: ˌɪ.ˈmens]That play was an immense success. = La pièce de théâtre a été un immense succès.
vast [vaster, vastest]◼◼◼(very large or wide (literally or figuratively)) adjective [UK: vɑːst] [US: ˈvæst]The village was threatened by a vast wildfire. = Le village était menacé par un immense feu de forêt.
whopping(exceptionally great or large) adjective [UK: ˈwɒp.ɪŋ] [US: ˈwɑːp.ɪŋ]