Crossword Genius

Informal judge with money, winning cases (3)

Ross

I believe the answer is:

ump

I'm a little stuck... Click here to teach me more about this clue!

'informal judge' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'money winning cases' is the wordplay.
'money' becomes 'm' (abbreviation used in economics).
'winning' becomes 'up' (eg being up at half time in football).
'cases' is an insertion indicator.
'm' going within 'up' is 'UMP'.

'with' acts as a link.

Can you help me to learn more?

I've seen this clue in The Guardian.
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