From the right, hence a monster (4)

I believe the answer is:

ogre

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'monster' is the definition.
(fairy tale monster)

I don't understand the rest of the clue.

(Other definitions for ogre that I've seen before include "Wicked giant" , "Giant: monster" , "stern one who inspires fear" , "Monstrous person" , "Bugbear" .)

I've seen this clue in The Times and The Sunday Times.

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