Crossword Genius

Indicate agreement with reserve, there's nothing doing (2,4)

Ross

I believe the answer is:

no dice

'there's nothing doing' is the definition.
(both can mean a situation is hopeless)

'indicate agreement with reserve' is the wordplay.
'indicate agreement' becomes 'nod' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'reserve' becomes 'ice' (I've seen this before).
'nod'+'ice'='NO DICE'

(Other definitions for no dice that I've seen before include "indicates lack of success" , "a negative response" , "Absolutely not" , "Emphatic refusal" , "with which many games are unplayable" .)

I've seen this clue in The Guardian.
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