Crossword Genius

Dog handler's first old expression of disgust (4)

Ross

I believe the answer is:

pugh

'old expression of disgust' is the definition.

'dog handler's first' is the wordplay.
'dog' becomes 'pug' (pug is a kind of dog).
'handler's first' becomes 'h' (1st letter of 'handler').
'pug'+'h'='PUGH'

I've seen this clue in The Independent.
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