Kind drunkard takes in Loomer finally (4)
I believe the answer is:
sort
'kind' is the definition.
(synonyms)
'drunkard takes in loomer finally' is the wordplay.
'drunkard' becomes 'sot' (sot can mean a drunken person).
'takes in' means one lot of letters goes inside another.
'finally' says to take the final letters.
The last letter of 'loomer' is 'r'.
'sot' going around 'r' is 'SORT'.
(Other definitions for sort that I've seen before include "The kind to categorise" , "Put in order" , "Type, category" , "Arrange in order" , "class" .)