There's nothing unusual about Marlon (6)

I believe the answer is:

normal

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'there's nothing unusual' is the definition.
I can't judge whether this definition defines the answer.

'about marlon' is the wordplay.
'about' is an anagram indicator.
'marlon' is an anagram of 'NORMAL'.

Can you help me to learn more?

(Other definitions for normal that I've seen before include "Common" , "Commonplace" , "Usual, not extraordinary" , "Customary" , "Usual, typical, expected" .)

I've seen this clue in The Irish News.

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