Really bad actors (4-5)

I believe the answer is:

evil-doers

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'really' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'bad actors' is the wordplay.
'bad' becomes 'evil' (associated in meaning).
'actors' becomes 'doers' ('doer' can be a synonym of 'actor').
'evil'+'doers'='EVIL-DOERS'

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