Urgent attacker proceeding (8,7)

I believe the answer is:

pressing forward

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'proceeding' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'urgent attacker' is the wordplay.
'urgent' becomes 'pressing' (synonyms).
'attacker' becomes 'forward' (I've seen this before).
'pressing'+'forward'='PRESSING FORWARD'

Can you help me to learn more?

I've seen this clue in The Daily Express.

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