Exponentially Crossword Clue

 The answer to the crossword clue "Exponentially" is RAPIDLY. This is a 6-letter word that means happening or developing very quickly.

The word "rapidly" comes from the Latin word "rapidus", which means "swift". It was first used in English in the 14th century.

Here are some other words that could be used to complete the crossword clue "Exponentially":

FASTLY (6 letters)

SPEEDILY (8 letters)

HASTILY (6 letters)

AGGRESSIVELY (11 letters)

IMPULSIVELY (11 letters)

I hope this helps!