Nemeses

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

His fear of public speaking was his nemeses when it came to advancing his career.

Her fear of public speaking was one of her nemeses in her career advancement.

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

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

Time management and work overload were his nemeses at the workplace.

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.

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