One who cheats others.
One who robs others in a lawless area, especially as part of a group.
A runner who covertly joins a race without having registered as a participant.
An outlaw.
An aircraft identified as an enemy, but distinct from "hostile" or "threat" in that it is not immediately to be engaged.
To rob, or steal from, in the manner of a bandit.
A cheat, especially one who evades payment.