Model posed around university, being pretentious (6)
I believe the answer is:
pseudo
'pretentious' is the definition.
'model posed around university' is the wordplay.
'model' is an anagram indicator.
'around' is an insertion indicator.
'university' becomes 'u'.
'posed' with letters rearranged gives 'psedo'.
'psedo' going around 'u' is 'PSEUDO'.
'being' is the link.
(Other definitions for pseudo that I've seen before include "Pretentious, insincere" , "False - souped (anag)" , "Counterfeit" , "Does up, looking phoney" , "Use pod (anag.)" .)