Priest from third world always sends outsiders away (8)
I believe the answer is:
reverend
'priest' is the definition.
(I've seen this before)
'third world always sends outsiders away' is the wordplay.
'third world' becomes 'r' (drd letter of 'world').
'always' becomes 'ever' (synonyms).
'sends outsiders away' becomes 'end' (I am not sure about this - if you are sure you should believe this answer much more).
'r'+'ever'+'end'='REVEREND'
'from' is the link.
Can you help me to learn more?
(Other definitions for reverend that I've seen before include "Title of respect for a member of the clergy" , "Clergyman's title" , "Cleric's title" , "Title of a Protestant clergyman" , "Title of respect for a clergyman" .)