Dishevelled drunkard turning up outside university escorted (7)
I believe the answer is:
tousled
'dishevelled' is the definition.
('tousle' can be a synonym of 'dishevel')
'drunkard turning up outside university escorted' is the wordplay.
'drunkard' becomes 'sot' (synonyms).
'turning up' is a reversal indicator.
'outside' means one lot of letters goes inside another.
'university' becomes 'u' (abbreviation for university).
'escorted' becomes 'led' (to lead someone somewhere is to escort them).
'sot' written backwards gives 'tos'.
'tos' enclosing 'u' is 'tous'.
'tous'+'led'='TOUSLED'
(Other definitions for tousled that I've seen before include "In disarray, hair perhaps" , "Mussed up" , "Dishevelled" , "Made hair untidy, being loudest" , "Of hair, untidy in loudest way" .)