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Awful glutton first to lapse during fast (7)

Ross

I believe the answer is:

ghastly

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

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(Other definitions for ghastly that I've seen before include "Gruesome, repellent" , "Very pale" , "Frightful" , "Dreadful" , "Hideous" .)

I've seen this clue in The Daily Express.
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