Nemeses

The journalist's nemeses, the lack of reliable sources and conflicting information, made it hard for her to report the truth.

The roadrunner and coyote were nemeses in the cartoon.

The cat and mouse were nemeses in the classic cartoon.

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

His stubbornness was one of his nemeses that often led to arguments with his loved ones.