English Reference

Word

nemesis

Phoneticsneme·sis

US/ˈnɛməsɪs/

UK/nˈɛməsɪs/

Countable noun

Definition

n. 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.

n. 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.”

Examples

simple

“The local champion finally met his nemesis in the final match.”

contextual

“Public speaking had always been her professional nemesis, preventing her from seeking the promotions she deserved.”

complex

“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

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

Real-World Examples

“Miss Lemon – Lydia’s arch nemesis with whom she has an entertaining feud – receives a prize designed to play havoc with her lactose intolerance.”
The Guardian 15 Aug 2026
“Through such trials birders develop what they call “nemesis birds,” birderspeak for the species that bedevil them again and again, despite their best efforts.”
The New York Times 26 Aug 2023
“Every New Year’s Day, Lily wakes up in a new century, trying to navigate first love, avoid her ever-present nemesis, and cope with life without chicken nuggets.”
The Guardian 26 Jun 2026
“The game's environmental design is outstanding, and connecting a remote resource can be just as gratifying as defeating a nemesis in a different game.”
The New York Times 26 Sept 2025

Etymology

From Ancient Greek Νέμεσις (Némesis, “Nemesis, goddess of retribution”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Stories

Greek Mythology · See all Greek myth origin

Expressions the ancient Greek myths left in everyday English.

a Herculean task — A task requiring enormous strength, effort, or determination to complete.

a Pyrrhic victory — A win that costs so much it feels almost like a defeat.

a Sisyphean task — A task that is endless and futile, because it must be repeated forever without ever being finished.

Achilles' heel — A single hidden weakness in someone or something otherwise strong.

Ariadne's thread — A method or clue that guides you safely through a confusing, complicated problem.

atlas — a book of maps or a collection of charts; it can also refer to a specific bone in your neck or a figure from Greek mythology.

The word in film

Star Trek: Nemesis · 2002 · Sci-Fi

Directed by:
Stuart Baird
Starring:
Patrick Stewart, Whoopi Goldberg, John Berg

Stuart Baird directed this 2002 science-fiction adventure, the tenth Star Trek film, with Patrick Stewart returning as Captain Picard. Picard confronts a rival commander built to be his equal and opposite. The title uses nemesis for a sworn enemy who feels designed to defeat the hero.

In Literature

Cover for Nemesis

Cover shown under fair use for identification and commentary.

Nemesis · 1989-01-01 · Science fiction

Author:
Isaac Asimov

Isaac Asimov published this science-fiction novel in 1989. When astronomers find a small red star heading toward Earth, a secret colony ship escapes to its planetary system. The title is the star's name — and the deadly threat hanging over humanity.

Domain

Astronomy

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Frequent
Level
C1 · Advanced
Updated

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