One fails to keep up (7)

I believe the answer is:

laggard

(Other definitions for laggard that I've seen before include "Drag gal around for one who falls behind" , "Moving slowly" , "Dilatory person" , "He drags along behind" , "Slow mover" .)

I've seen this clue in The Guardian.

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.