Drop off university student intercepting a don, surprisingly (6)
I believe the answer is:
'drop off' is the definition.
(I know that drop off can be written as unload)
'university student intercepting a don surprisingly' is the wordplay.
'university' becomes 'U' (abbreviation for university).
'student' becomes 'L' (as in L-plates for learner drivers).
'intercepting' indicates putting letters inside (I've seen this in other clues).
'surprisingly' indicates anagramming the letters (a surprising ordering of the letters).
'adon' with letters rearranged gives 'noad'.
'l' going inside 'noad' is 'nload'.
(Other definitions for unload that I've seen before include "Take cargo off (a ship)" , "Remove (a gun's ammo)" , "Take goods from (ship)" , "Remove cargo from ship or goods from lorry" , "Discharge cargo" .)