Outfit you wouldn't want to be seen in (10)
I believe the answer is:
camouflage
'outfit' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'you wouldn't want to be seen in' is the wordplay.
I cannot really understand how this works, but
'you' could be 'u' (commonly used in online communication) and 'u' is found in the answer.
'be' could be 'am' and 'am' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for camouflage that I've seen before include "Green and brown on a green and brown background, say?" , "Means of disguise" , "Method of blending in fine" , "blind" , "Disguise (from enemy)" .)