Not paid for (6)

I believe the answer is:

gratis

(Other definitions for gratis that I've seen before include "Free of charge" , "Free, costs nothing" , "Free, at no cost" , "Without payment" , "Without charge" .)

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.