Condition that is barely noticeable (6)
I believe the answer is:
nudity
This could be a double definition.
'condition' is the first definition.
(nudity is a kind of condition)
'barely noticeable' is the second definition.
I know that 'barely' relates to this answer.
'that is' is the link.
Can you help me to learn more?
(Other definitions for nudity that I've seen before include "Untidy (anag) -- result of being in one's birthday suit" , "Moving at high speed" , "State of nakedness" , "natural state" , "feature of post-watershed TV?" .)