Crossword Genius

A vegetable – and it gets consumed with alacrity (8)

Ross

I believe the answer is:

celerity

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'alacrity' is the definition.
(thesaurus)

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(Other definitions for celerity that I've seen before include "Haste" , "Pace" , "Rapidity, speediness" , "Quickness" , "Dispatch" .)

I've seen this clue in the Evening Standard.
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