Crossword Genius

Imp to knock with spring onion (11)

Ross

I believe the answer is:

rapscallion

'imp' is the definition.
(I know that imp can be written as rapscallion)

'knock with spring onion' is the wordplay.
'knock' becomes 'rap' (synonyms).
'with' is a charade indicator (letters next to each other).
'spring onion' becomes 'scallion' (I've seen this before).
'rap'+'scallion'='RAPSCALLION'

'to' is the link.

(Other definitions for rapscallion that I've seen before include "Plain carols (anag) - rogue" , "Scoundrel" , "Monkey" , "Disreputable person - local sprain (anag)" , "Terror" .)

I've seen this clue in The Daily Express.
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