He's rude being shown in (7)
I believe the answer is:
ushered
'shown in' is the definition.
'ushered' can be an answer for 'shown' ('usher' can be a synonym of 'show'). I am unsure of the 'in' bit.
'he's rude' is the wordplay.
'he's rude' can be anagrammed to 'USHERED'.
But, I'm unsure how the anagram is indicated.
'being' is the link.
Can you help me to learn more?
(Other definitions for ushered that I've seen before include "Conducted" , "Showed people to seats as in cinemas or theatre" , "Escorted" , "Led" , "Showed to a seat" .)