Cunning crossword compiler, one using anagrams (9)

I believe the answer is:

ingenious

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

'cunning' is the definition.
(I know that cunning can be written as ingenious)

'compiler one using anagrams' is the wordplay.
'compiler' becomes 'I' (the person who is writing these clues).
'anagrams' indicates an anagram (I've seen 'anagram' mean this).
'one'+'using'='oneusing'
'oneusing' anagrammed gives 'ngenious'.
'i'+'ngenious'='INGENIOUS'

'crossword' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for ingenious that I've seen before include "Skilfully contrived" , "Displaying art" , "Brilliant" , "Artless" , "Creative" .)

I've seen this clue in The Telegraph.

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