Nemeses

The author's nemeses, negative reviews and low book sales, discouraged her from writing.

The tragic hero's downfall was attributed to his arrogance and disregard for the warnings of the nemeses.

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

The nemeses of Sherlock Holmes were some of the most memorable characters in literature.

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