Nemeses

Impulsive buying was one of her nemeses that resulted in a financial crisis.

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

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

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

The traveler's nemeses, lost luggage and delayed flights, ruined her vacation.

The rainy weather has been a nemeses to the outdoor wedding plans.