What does nemesis mean?
In modern English, nemesis most often names a formidable, persistent rival—someone whose power or opposition repeatedly frustrates a person, group, or institution. It can also refer more broadly to an agent of ruin, such as a disease, scandal, or historical event that defeats someone's ambitions. The word carries a stronger, more literary tone than enemy and often implies a longstanding relationship or repeated conflict. In religious and classical contexts, Nemesis is the ancient Greek personification of divine retribution, punishing wrongdoing and enforcing balance. Because of that association, the modern word can imply that the rival is deservedly opposed or that defeat is a fitting reversal of fortune. Although often used in serious prose and journalism, nemesis is also familiar in sport, politics, and entertainment, where it describes a consistently successful opponent. Its vivid history makes it more than a synonym for enemy: it suggests both a formidable adversary and the larger forces of retribution or reversal.
nounA formidable, long-standing rival or arch-enemy; by extension, a person, thing, or force that brings someone's defeat or ruin. Capitalized as Nemesis, it names the ancient Greek personification of divine retribution.
- A formidable or persistent rival, especially a long-standing adversary.
- A person, thing, or force that causes someone's defeat, downfall, or ruin.
- The ancient Greek personification of divine retribution and punishment.
"The determined young challenger became the reigning champion's greatest nemesis."
"Her business rival became her nemesis by repeatedly undercutting her plans."
"In Greek mythology, Nemesis punished hubris and insisted that evildoers faced just consequences."
The plural is most often formed by adding -s to the unchanged form; the alternative nemesses is established but less common.
"Her two greatest nemeses were formidable opponents from rival universities."
Nemesis began as an ancient Greek force of retribution, then became your most persistent opponent.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does nemesis come from?
The word comes from ancient Greek νέμεσις (némesis), a personification of righteous anger and retribution, associated with the god of the same name. Greek némesis was also connected with the idea of distributing or allotting what was deserved. The word entered English in the early 16th century with meanings relating to vengeance or retribution before developing the figurative sense of a ruinous enemy.
Related word forms
How nemesis is actually used
The modern figurative use is usually a count noun and often implies a repeated or enduring conflict. It is more literary and dramatic than enemy, suggesting an especially formidable or consequential opponent. The capitalized form Nemesis is used for the Greek goddess and related concepts of retribution.