Rascally con attracting cry of irritation once (8)

I believe the answer is:

scampish

'rascally' is the definition.
(like a rascal or scamp)

'con attracting cry of irritation once' is the wordplay.
'con' becomes 'scam' (both can mean a fraudulent scheme).
'attracting' means one lot of letters go next to another.
'cry of irritation once' becomes 'pish' (old-fashioned expression of irritation).
'scam'+'pish'='SCAMPISH'

I've seen this clue in The Times.

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