Stu-pĕn'doŭs, a.

a. [Lat. stupendus, astonishing, p. future pass. of stupere, to be astonished at; It. stupendo, Sp. & Pg. estupendo.] Astonishing; wonderful; amazing; especially, of astonishing magnitude or elevation; as, a stupendous pile.

All are but parts of one stupendous whole. Pope.