Interrupted, running away? (5)

I believe the answer is:

onoff

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'interrupted' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'running away?' is the wordplay.
'running' becomes 'on' (eg when a machine is running it is on).
'away?' becomes 'off' ('off' can be a synonym of 'away').
'on'+'off'='ONOFF'

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I've seen this clue in The Daily Express.

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