Hidden non-paying passenger (8)

I believe the answer is:

stowaway

(Other definitions for stowaway that I've seen before include "pack" , "Hidden passenger" , "One hiding on board" , "Travel secretly" , "Concealed traveller" .)

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.