One who snitches (3)

I believe the answer is:

rat

(Other definitions for rat that I've seen before include "Betray like a rodent" , "One deserting sinking ship" , "one who betrayed" , "that gets out of stricken vessel" , "Renegade" .)

I've seen this clue in 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.