n. & v.
n. 1 a violent contention or altercation between individuals or with others. 2 a rupture of friendly relations. 3 an occasion of complaint against a person, a person's actions, etc.
v.intr. (quarrelled, quarrelling; US quarreled, quarreling) 1 (often foll. by with) take exception; find fault. 2 fall out; have a dispute; break off friendly relations. quarreller n.
[ ME f. OF querele f. L querel(l)a complaint f. queri complain ]