Crossword Genius

Unauthorised passenger (8)

Ross

I believe the answer is:

stowaway

'unauthorised passenger' is the definition.
(eg on a ship)

This is the entire clue.

(Other definitions for stowaway that I've seen before include "One hides aboard ship to get free passage" , "Hidden, ticketless voyager" , "Travel secretly" , "accommodation, perhaps, for this non-paying traveller?" , "Hider on board" .)

I've seen this clue in The Guardian and the Sydney Morning Herald.
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