enmity
Definitions
The state or feeling of being actively opposed or hostile to someone or something.
A deep-seated, often mutual, hatred or ill will.
Examples
A long-standing enmity between the two families prevented them from ever resolving their dispute.
Despite their public smiles, there was a deep-seated enmity simmering beneath the surface of their professional relationship.
The peace treaty was signed in hopes of ending the bitter enmity that had plagued the two nations for decades.
Synonyms
hostility animosity rancor hatred antagonism malice ill-will