Nemeses

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

The city's nemeses, potholes, made for a bumpy and frustrating commute.

Growing up in poverty, she believed that a life of struggle was her nemeses.

He had a feeling of foreboding that the car accident he had avoided would ultimately prove to be his nemeses.

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

Her procrastination was her nemeses when it came to completing projects.