Nemeses

The detective knew that the elusive criminal was his nemeses, always managing to evade capture.

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

Her mother was her nemeses when it came to fashion choices.

The thief's greed eventually became his nemeses and led to his capture.

The two rival gangs were nemeses in the crime world.

Their nemeses were their fear of failure and lack of self-confidence.

The nemeses of the criminal underworld are the police officers who tirelessly work to bring them to justice.