He opposed the Reformation to a greater degree (4)

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'to a greater degree' is the definition.
(I've seen this in another clue)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for more that I've seen before include "Writer" , "To a greater extent" , "Greater quantity or number" , "author" , "Additional or larger amount" .)

I've seen this clue in The Independent.

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