His slang becomes annoying (8)

I believe the answer is:

hassling

'annoying' is the definition.
(hassling is a kind of annoying)

'his slang becomes' is the wordplay.
'becomes' indicates an anagram.
'his'+'slang'='hisslang'
'hisslang' is an anagram of 'HASSLING'.

(Another definition for hassling that I've seen is " Annoying continually".)

I've seen this clue in The Telegraph.

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