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.

The computer virus was the nemeses of the company's entire network.

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

The nemeses of computer hackers are the cybersecurity experts who work to keep their networks safe.

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.