Crossword Genius

Rude old boy observed reportedly (7)

Ross

I believe the answer is:

obscene

'rude' is the definition.
(obscene can mean rude or indecent)

'old boy observed reportedly' is the wordplay.
'old boy' becomes 'OB' (abbreviation for a private school 'old boy').
'observed' becomes 'seen' (synonyms).
'reportedly' shows a homophone (sound like).
'seen' is a homophone of 'scene'.
'ob'+'scene'='OBSCENE'

(Other definitions for obscene that I've seen before include "Lewd - offensive" , "Lewd or loathsome" , "offending sensibilities?" , "Morally offensive, disgusting" , "Improper" .)

I've seen this clue in The Sun.
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