Claude Monet's devil (5)

I believe the answer is:

demon

I'm a little stuck... Click here to teach me more about this clue!

'devil' is the definition.
(I know that devil can be written as demon)

'claude monet's' is the wordplay.
'DEMON' is hidden within the letters.
But, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for demon that I've seen before include "Fallen angel" , "malignant spirit" , "Monster" , "Skilful person" , "See 3" .)

I've seen this clue in The Sun.

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