Nemeses

His phobia of heights was one of his nemeses that prevented him from enjoying outdoor activities.

The nemeses of the company's expansion plans were the strict regulations imposed by the government.

Growing up in poverty, she believed that a life of struggle was her nemeses.

The two companies were nemeses in the tech industry.

The entrepreneur's nemeses were the competitors who always seemed to have the upper hand.

He had a feeling of foreboding that the car accident he had avoided would ultimately prove to be his nemeses.

The economic recession proved to be the nemeses of many small businesses.