Nemeses

The detective knew that the elusive criminal was his nemeses, always managing to evade capture.

Her lack of self-control when it came to spending was her financial nemeses.

His phobia of heights was one of his nemeses that prevented him from enjoying outdoor activities.

The roadrunner and coyote were nemeses in the cartoon.

The nemeses of clean energy are the fossil fuel industries that have long dominated the world's energy production.

The cat and mouse were nemeses in the classic cartoon.

The nemeses of the criminal underworld are the police officers who tirelessly work to bring them to justice.