tremendous

Etymology

From Latin tremendus (“fearful, terrible”), gerundive of tremō (“to tremble”), + -ous.

adj

1. Awe-inspiring; terrific.
   This she spoke with so commanding an air, standing with her back to the fire, with one hand behind her, and a pinch of snuff in the other, that I question whether Thalestris, at the head of her Amazons, ever made a more tremendous figure. 1749, Henry Fielding, The History of Tom Jones, a Foundling
2. Notable for its size, power, or excellence.
   Van Beethoven's ninth symphony is a tremendous piece of music.
3. Extremely large (in amount, extent, degree, etc.) or great
   There was a tremendous outpouring of support.
   The tremendous tragedy in which he had been involved - it was evident he was a fugitive from Weybridge - had driven him to the very verge of his reason. 1898, H.G. Wells, The War of the Worlds, London: William Heinemann, page 113