How one lost by getting up late? (7,3)

'late?' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives can sometimes define each other.

'how one lost by getting up' is the wordplay.
I cannot quite see how this works, but
'one' could be 'un' (northern English dialect form of 'one') and 'un' is located in the answer.
This explanation may well be incorrect...