Less likely to pack it in (5)

I believe the answer is:

gamer

(Other definitions for gamer that I've seen before include "More spirited" , "One role-playing on computer" , "One plays" , "More handicapped" , "I bet" .)

I've seen this clue in the Newsday.

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.