Very rapidly, as in a ballet studio? (2,5,3,6)
I believe the answer is:
by leaps and bounds
(Another definition for by leaps and bounds that I've seen is " With very rapid progress".)
I've seen this clue in The New York Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.