Romantic Bond perhaps keeping trim (6)
I believe the answer is:
sloppy
'romantic' is the definition.
(thesaurus)
'bond perhaps keeping trim' is the wordplay.
'bond perhaps' becomes 'spy' (James Bond).
'keeping' means one lot of letters goes inside another.
'trim' becomes 'lop' ('lop' can be a synonym of 'trim').
'spy' enclosing 'lop' is 'SLOPPY'.
(Other definitions for sloppy that I've seen before include "Excessively casual" , "Romantic" , "Lacking neatness and order" , "Imprecise; wet" , "Casual; sentimental" .)