Nemeses

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

Poor time management was one of his nemeses that hindered his productivity.

The homeowner's nemeses, termites, caused extensive damage to the structure of their house.

The detective and his nemeses engaged in a cat-and-mouse game that lasted for years.

The nemeses of the detective were always trying to outsmart him.

Financial struggles and debt were his nemeses for many years.