noun / verb
feud
FYOOD/fjuːd/
A prolonged bitter quarrel between people or groups.
The feud between the two families divides the entire neighborhood.

Etymology
Middle English fede meant hostility or hatred generally. Its later senses of vendetta and hostility between families or clans connect that broad feeling to a sustained, bitter quarrel.
In context
the confrontation on April 4th was the final explosion of a feud that had been building for years
More examples
- The brothers feud over control of the family business.
- Their bitter feud finally ended after twenty years.
- The feuding neighbors refuse to speak to each other.
Forms
feud · feuds · feuded · feuding