feud

Pronunciation:
\ˈfyüd\
Function:
noun
Etymology:
alteration of Middle English feide, from Anglo-French *faide, of Germanic origin; akin to Old High German fēhida hostility, feud, Old English fāh hostile
Date:
15th century

Definition:a mutual enmity or quarrel that is often prolonged or inveterate

A minor misunderstanding between the brothers sparked a feud that broke them apart.

Nicholas Loh 1-3