First attested from 1547, from Late Latin stupendus (“stunning, amazing"), from Latinstupere (“to be stunned"). See also stupid.
From Late Latin stupendusstunninggerundive of Latin stupēreto be stunned
American Heritage Dictionary of the English Language, 5th Edition
Stupendous Sentence Examples
This stupendous task was reserved for a general congress, and it was agreed to meet at Vienna.
The drums are simply stupendous, so powerful all of a sudden.
An even more complete and minutely detailed view of the sacrificial system is no doubt obtained from the ceremonial manuals, the Kalpa-sutras; but it is just by the speculative discussions of the Brahmanasthe mystic significance and symbolical colouring with which they invest single rites - that we gain a real insight into the nature and gradual development of this truly stupendous system of ritual worship.
As to be expected from a night of psychedelic trance, the decoration was stupendous.
Taken from an antique model of a heroic charger, this is a really stupendous piece.