unimaginably

Meanings

1. 1
   adv

   To an extent or in a way that cannot be, or could not have been, imagined

   As it prepares to inaugurate a new president, America is also trying to forge a fresh identity in a world unimaginably different from the one inherited by George W Bush only eight years ago.

2. 2
   adv

   to an unimaginable extent

Etymology

From unimaginable + -ly.