Nemeses

The roadrunner and coyote were nemeses in the cartoon.

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

The musician's nemeses, stage fright and technical difficulties, affected her performance.

The cat and mouse were nemeses in the classic cartoon.

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

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