Nemeses

The farmer's nemeses were the locusts that ate his crops year after year.

The roadrunner and coyote were nemeses in the cartoon.

Her mother was her nemeses when it came to fashion choices.

The scientist believed that time was the ultimate nemeses, always ticking away and limiting his ability to achieve his goals.

The cat and mouse were nemeses in the classic cartoon.

The thief's greed eventually became his nemeses and led to his capture.

The two rival gangs were nemeses in the crime world.