Deny is cartoon creator (6)

I believe the answer is:

disney

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

'cartoon creator' is the definition.
The definition suggests a singular noun which matches the answer.

'deny is' is the wordplay.
'deny is' can be anagrammed to 'DISNEY'.
However, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for disney that I've seen before include "Famous animator" , "Wealthy (informal)" , "US film cartoonist" , "Walt - - , animator" , "Walt, pioneer of cartoon films" .)

I've seen this clue in The Irish Independent.

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