Nemesis

Noun

Definition: A long-standing rival; an archenemy.

Definition: An agent or instrument of retribution or vengeance.

Definition: A downfall or defeat that is difficult or impossible to avoid.

Synonyms: Adversary, Enemy, Opponent, Rival

Antonyms: Ally, Friend

Examples:

Sherlock Holmes considered Professor Moriarty his nemesis.
The protagonist's nemesis finally met his deserved punishment.

Mnemonics:

Picture your biggest rival or enemy standing in the shadows, waiting for their chance to bring you down.

Etymology:

Origin:

Nemesis comes from the Greek word "nemesis" which means "just indignation" or "retribution". In Greek mythology, Nemesis was the goddess of retribution and vengeance.

Historical Usage:

The concept of nemesis dates back to ancient Greece and has been used throughout history to refer to a person's inevitable punishment or downfall.

Related Idioms:

Idiom:

"Meet one's nemesis"

Explanation:

Refers to encountering or facing the person or thing that proves to be one's undoing or downfall.

Misconceptions:

Misconception:

Confusing Nemesis with a simple enemy or opponent.

Explanation:

Nemesis implies a longstanding rival or a more powerful force seeking retribution, not just a regular adversary. It suggests a sense of inevitability in the punishment or defeat that a normal enemy may not convey.