(fyd) noun
1. Vindictive strife or hostility between families or clans, commonly hereditary.
2. Any quarrel or conflict.
—v.i. To engage in a feud; quarrel bitterly. [ME fede <OF <OHG fehida hatred, revenge]
—feud′·ist noun Synonyms: animosity, bitterness, contention, contest, controversy, dispute, dissension, enmity, hostility, quarrel, strife. A feud is enmity between families, clans, or parties, with acts of hostility mutually retaliated and avenged; feud is rarely used of individuals, never of nations. While all the other words of the group may refer to that which is transient, a feud is long–enduring, and often hereditary. Dissension is used of a number of persons, of a party or other organization. Bitterness is in feeling only; enmity and hostility involve will and purpose to oppose or injure. Compare QUARREL.

(fyd) noun Law
Land held of a superior on condition of rendering service; a fief: also spelled feod. [<Med. L feudum <Gmc.]