Crossword Genius

In support of apprentice officially receiving pardon? (6)

Ross

I believe the answer is:

behind

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'in support of' is the definition.
(I've seen this in another clue)

I can't explain the remainder of the clue.

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(Other definitions for behind that I've seen before include "support" , "Hidden by; bottom" , "in van? No" , "At the back of" , "Taking place in secret" .)

I've seen this clue in The Telegraph.
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