University dons question answer following drink (5)
I believe the answer is:
quaff
'drink' is the definition.
(quaffing is a kind of drinking)
'university dons question answer following' is the wordplay.
'university' becomes 'u' (abbreviation for university).
'dons' indicates putting letters inside (don means to wear or put on).
'question' becomes 'q'.
'answer' becomes 'a' (abbreviation eg in Q and A).
'following' becomes 'ff' (abbreviation used in citations).
'q'+'a'='qa'
'u' placed into 'qa' is 'qua'.
'qua'+'ff'='QUAFF'
(Other definitions for quaff that I've seen before include "Drink deeply or eagerly" , "Imbibe" , "Drink (something) heartily" , "Knock back" , "Drink in large draughts" .)