Like a stereotypical teen's room (5)

I believe the answer is:

messy

'like a stereotypical teen's room' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for messy that I've seen before include "Untidy, dirty" , "Disorganised" , "Dirty and disorderly" .)

I've seen this clue in the Universal.

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