Question a graduate south of a Jordanian port (5)
I believe the answer is:
aqaba
'jordanian port' is the definition.
(I've seen this in another clue)
'question a graduate south of a' is the wordplay.
'question' becomes 'q'.
'graduate' becomes 'BA' (someone with a Bachelor of Arts degree).
'south of' says to put letters next to each other (in a down clue, some letters go under others).
'q'+'a'+'ba'='qaba'
'qaba' put after 'a' is 'AQABA'.
(Other definitions for aqaba that I've seen before include "Gulf in Red Sea" , "Asian port" , "Jordan's port" , "city" , "Jordanian port" .)