Crossword Genius

What neglected study may easily become (5)

Ross

I believe the answer is:

dusty

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

'easily become' is the definition.
I can't judge whether this definition defines the answer.

'what neglected study' is the wordplay.
'study' anagrams to 'DUSTY'.
But, I'm not clear how this is indicated.

'may' acts as a link.

Can you help me to learn more?

(Other definitions for dusty that I've seen before include "Boring" , "Powdery" , "Study (anag.)" , "Neglected and in need of a clean" , "Covered in fine particles" .)

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