Crossword Genius

Party by Roman upset bouncer (7)

Ross

I believe the answer is:

doorman

'bouncer' is the definition.
(guard stationed at a door)

'party by roman upset' is the wordplay.
'party' becomes 'do' (do can informally mean a party).
'by' means one lot of letters go next to another.
'upset' is an anagram indicator.
'roman' is an anagram of 'orman'.
'do'+'orman'='DOORMAN'

(Other definitions for doorman that I've seen before include "hotel employee?" , "Entry attendant" , "Commissionaire" , "One who may help guest" , "Entrance attendant" .)

I've seen this clue in The Mirror.
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