Confuse theologian drink consumes (5)
I believe the answer is:
addle
'confuse' is the definition.
(addling is a kind of confusing)
'theologian drink consumes' is the wordplay.
'theologian' becomes 'dd' (Doctor of Divinity degree).
'drink' becomes 'ale' (I've seen this before).
'consumes' means one lot of letters goes inside another.
'dd' put inside 'ale' is 'ADDLE'.
(Other definitions for addle that I've seen before include "becomes muddled" , "Make confused - go bad" , "Confuse - decay" , "Scramble" , "Go rotten" .)