In French, it is consumed by my hatred (6)
I believe the answer is:
enmity
'hatred' is the definition.
(I know that enmity is a type of hatred)
'in french it is consumed by my' is the wordplay.
'in french' becomes 'en' ('in' in French).
'is consumed by' indicates putting letters inside (inserted letters get consumed).
'it' inserted inside 'my' is 'mity'.
'en'+'mity'='ENMITY'
(Other definitions for enmity that I've seen before include "needle" , "Bad blood" , "Animus" , "Antagonism, ill-will" , "ill will" .)