Antepenultimate word in a noted Neil Armstrong quote (4)

I believe the answer is:

leap

(Other definitions for leap that I've seen before include "Jump; type of year" , "Sudden bound" , "Sudden surge" , "identify extra day?" , "as 1984 was" .)

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.