Sophisticated, put money aside to cover University (5)
I believe the answer is:
suave
'sophisticated' is the definition.
(I've seen this in another clue)
'put money aside to cover university' is the wordplay.
'put money aside' becomes 'save' (I've seen this before).
'to cover' indicates putting letters inside.
'university' becomes 'U' (abbreviation as in UMass).
'save' enclosing 'u' is 'SUAVE'.
(Other definitions for suave that I've seen before include "Smoothly sophisticated" , "Smoothly affable" , "Debonair" , "Svelte" , "Charming, confident" .)