Some lovers of the left! (5)
I believe the answer is:
verso
'the left' is the definition.
(thesaurus)
'some lovers of' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'VERSO' can be found hidden inside 'lovers of'.
(Other definitions for verso that I've seen before include "Left-hand page or back of a document" , "Left part of book" .)