Unhappy, having no right to be totally exposed (6)
I believe the answer is:
narked
'unhappy' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs sometimes define each other.
'no right to be totally exposed' is the wordplay.
'no' becomes 'n' (common abbreviation).
'right' becomes 'ar' (I've seen this in other clues).
'to be totally exposed' becomes 'ked' (I can't justify this - if you can you should give a lot more credence to this answer).
'n'+'ar'+'ked'='NARKED'
'having' is the link.
Can you help me to learn more?
(Other definitions for narked that I've seen before include "Annoyed (informal)" , "Annoyed - upset - irritated" , "Angry" , "'Vexed, riled (6)'" , "Nettled" .)