Put off pit daily, in short, with resolution (12)

I believe the answer is:

determinedly

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'short with resolution' is the definition.
I can't tell whether this defines the answer.

'put off pit daily' is the wordplay.
'put off' becomes 'deter' (both can mean to discourage).
'pit' becomes 'mine' (mining pit).
'daily' becomes 'dly' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'deter'+'mine'+'dly'='DETERMINEDLY'

'in' acts as a link.

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I've seen this clue in The Irish News.

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