"Four score and seven years ___ . . ." (3)

I believe the answer is:

ago

(Other definitions for ago that I've seen before include "In past times" , "Back (in time)" , "Earlier, gone by" , "Time past" , "Previously" .)

I've seen this clue in the USA Today and 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.