Youth is naked and prone to be distant (8)
I believe the answer is:
outlying
'be distant' is the definition.
('outlying' can be similar in meaning to 'distant')
'youth is naked and prone' is the wordplay.
'is naked' says to take the centre.
'and' means one lot of letters go next to another.
'prone' becomes 'lying' (I've seen this before).
The middle of 'youth' is 'out'.
'out'+'lying'='OUTLYING'
'to' acts as a link.
(Other definitions for outlying that I've seen before include "Away from the middle" , "Remote from the centre" , "On the exterior" , "remote area" .)