Sewer scamperer (3)
I believe the answer is:
rat
(Other definitions for rat that I've seen before include "Rodent pest" , "Unpleasant character" , "Long-tailed rodent" , "Grass" , "Rodent; traitor" .)
I've seen this clue in the LA Times and The Wall Street Journal.
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.