Crossword Genius

Rev fills a box with church literature lacking in content (10)

Ross

I believe the answer is:

accelerate

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'rev' is the definition.
(thesaurus)

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(Other definitions for accelerate that I've seen before include "Quicken" , "snowball" , "Go faster" , "Crank up" , "Increase speed" .)

I've seen this clue in The Guardian.
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