Free of fizz (4)

I believe the answer is:

flat

(Other definitions for flat that I've seen before include "Boring - apartment" , "12 [TWO DIMENSIONAL]" , "place to live" , "Digs perhaps" , "One at a meeting" .)

I've seen this clue in the LA Times 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.