Also called blood feud. a bitter, continuous hostility, esp. between two families, clans, etc., often lasting for many years or generations.

a bitter quarrel or contention

a feud between labor and management.

to engage in a feud.

noun

agreement , comradeship , friendship

verb

agree , make peace , socialize

noun

altercation , bad blood * , bickering , broil * , combat , conflict , contention , contest , controversy , disagreement , discord , dispute , dissension , enmity , faction , falling out , fight , fracas , grudge , hostility , quarrel , rivalry , row , run-in * , squabble , strife , vendetta

verb

be at daggers with , be at odds , bicker , brawl , clash , contend , dispute , duel , quarrel , row , squabble , war , argument , broil , conflict , contest , disagreement , enmity , fight , fray , grudge , hostility , strife , tiff , vendetta