Crossword Genius

The rotten fish is sent back (3)

Ross

I believe the answer is:

bad

'the rotten' is the definition.
(I've seen this before)

'fish is sent back' is the wordplay.
'fish' becomes 'dab' (dab is a type of fish).
'is sent back' says the letters should be written backwards.
'dab' in reverse letter order is 'BAD'.

(Other definitions for bad that I've seen before include "Wicked" , "(Of food) decayed" , "Substandard" , "Mouldy, off" , "Stinking" .)

I've seen this clue in the Evening Standard.
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