Nine wandering around university showing boredom (5)
I believe the answer is:
ennui
'boredom' is the definition.
(I know that boredom can be written as ennui)
'nine wandering around university' is the wordplay.
'wandering' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'university' becomes 'u' (abbreviation for university).
'nine' with letters rearranged gives 'enni'.
'enni' enclosing 'u' is 'ENNUI'.
'showing' is the link.
(Other definitions for ennui that I've seen before include "Boredom, listlessness" , "Effect of boredom" , "Feeling of weariness or boredom" , "Feeling when tired of life?" , "depression" .)