Crossword Genius

Dressed in a dreary outfit (7)

Ross

I believe the answer is:

arrayed

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

'dressed' is the definition.
(I've seen this in another clue)

'a dreary outfit' is the wordplay.
'a dreary' can be anagrammed to 'ARRAYED'.
Though, I am not sure how the anagram is indicated.

'in' is the link.

Can you help me to learn more?

(Other definitions for arrayed that I've seen before include "Formed up" , "Displayed in a particular way" , "Decoratively assembled" , "Ordered" , "Marshalled; (finely) dressed" .)

I've seen this clue in The Globe and Mail.
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