Fond of harmonic (7)
I believe the answer is:
partial
This clue is a double definition.
'fond of' is the first definition.
(I've seen this before)
'harmonic' is the second definition.
(I know that partial is a type of harmonic)
(Other definitions for partial that I've seen before include "Fond of" , "One-sided" , "Biased or unfair" , "Biased or incomplete" , "Showing favouritism" .)