Reportedly ’ated being on a train? (6)
I believe the answer is:
aboard
'on a train?' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
(Other definitions for aboard that I've seen before include "on base" , "On (a ship/plane)" , "on a train, perhaps" , "Joined for mutual benefit" , "On an aircraft" .)