One of two possibly having left this place unclad (5)
I believe the answer is:
other
'one of two' is the definition.
Both the definition and answer are adjectives. Maybe you can see a link between them that I can't see?
'having left this place unclad' is the wordplay.
'having left' becomes 'oth' (I can't justify this - if you can you should believe this answer much more).
'this place' becomes 'here' (here in this location).
'unclad' indicates the central letters (the word is undressed of its external letters).
The middle of 'here' is 'er'.
'oth'+'er'='OTHER'
'possibly' acts as a link.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Not the one mentioned" , "Remaining" , "Alternate; additional" , "Different, alternative" , "Very unusual" .)