animosity
Definitions
A strong feeling of dislike or ill will.
Active hostility or antagonism.
Examples
Despite their long history of animosity, the two rivals decided to work together for the sake of the project.
There was a palpable sense of animosity between the two neighbors after the dispute over the property line.
Synonyms
hostility rancor enmity antipathy bitterness resentment hatred
Antonyms
friendliness goodwill amity affection kindness benevolence rapport