Nemeses

Her lack of self-control when it came to spending was her financial nemeses.

The politician's nemeses, the opposing party, launched a series of attacks on her policies.

The rival team was seen as our nemeses throughout the sports season.

The Red Sox and the Yankees are known as baseball nemeses.

The team's nemeses, the undefeated champions, were up next in the tournament.

The team's nemeses were injuries and lack of team coordination.