Husband consumed with enmity (4)
I believe the answer is:
hate
'enmity' is the definition.
(thesaurus)
'husband consumed' is the wordplay.
'husband' becomes 'h'.
'consumed' becomes 'ate' (eating is a kind of consuming).
'h'+'ate'='HATE'
'with' is the link.
(Other definitions for hate that I've seen before include "Passionately dislike" , "Detest" , "Passion" , "Thoroughly dislike, loathe" , "Abominate" .)