According to lore, if you knock on wood after making a hopeful statement, it will bring good luck.
He's a historian who has studied the lore of the American West.
The stigma of mental illness can prevent people from seeking treatment.
There is still a stigma attached to being a single parent in some cultures.
The two countries signed a peace pact after years of conflict.
The company and its workers reached a pact to improve working conditions.
The decision to fire him was arbitrary and unfair.
The teacher's grading system seemed arbitrary and was confusing to the students.
In a true meritocracy, everyone would have an equal opportunity to succeed.
Some argue that the US has become less of a meritocracy as wealth inequality has increased.