# nemesis

/ˈnɛməsɪs/ (US) · /nˈɛməsɪs/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/nemesis
Updated: 2026-08-15

## Definition

a person or thing that is a constant enemy or a very difficult problem to overcome. It often feels like they are specifically designed to defeat you.

For teachers: a persistent rival or formidable opponent who is seemingly impossible to defeat. Often carries a connotation of inescapable retribution or poetic justice.

## Examples

- The local champion finally met his nemesis in the final match.
- Public speaking had always been her professional nemesis, preventing her from seeking the promotions she deserved.
- In classical literature, the protagonist's downfall is frequently orchestrated by a nemesis who embodies the very flaws the hero refused to acknowledge during their rise to power.

## Usage notes

- Often used with the possessive ('my nemesis', 'his nemesis') to indicate a personal and long-standing rivalry.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.