reboarder means one who boards a vehicle again.
reboarder is pronounced /ˈɹiˌbɔɹdəɹ/.
Etymology
From reboard + -er.
noun
- One who boards a vehicle again.“Unless the delay before take-off is unduly long, or some exigency exists, experienced passengers who are continuing on the flight do not leave the plane. They know that the reboarding process will cast them in with the crowd of new passengers, since all must board together — reboarders receive no precedence.”