Caught in casual footwear around old university? Disgraceful! (10)
I believe the answer is:
scandalous
'disgraceful' is the definition.
(I know that disgraceful can be written as scandalous)
'caught in casual footwear around old university?' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'in' is an insertion indicator.
'casual footwear' becomes 'sandals' (I've seen this in another clue).
'around' is an insertion indicator.
'old university?' becomes 'ou' (this might be a standard abbreviation of which I'm unaware).
'sandals' going around 'ou' is 'sandalous'.
'c' inserted within 'sandalous' is 'SCANDALOUS'.
(Other definitions for scandalous that I've seen before include "Outrageous" , "Disgraceful" , "Causing outrage" , "Highly improper" , "Shocking and offensive" .)