incredibly

adverb

1. not easy to believe

   adv.all

   Examples

   Behind you the coastal hills plunge to the incredibly blue sea backed by the Turkish mountains.

   Synonyms implausibly improbably unbelievably

   Antonyms believably credibly plausibly probably

   Source: WordNet 3.0

2. exceedingly; extremely

   adv.all

   Source: WordNet 3.0

3. In an incredible manner.

   adverb

   Source: webster1913