English Reference

Word

opus

US/ˈoʊpəs/

UK/ˈɒpəs/

Countable noun

Definition

n. a major work of art, music, or literature. It is often used to describe a very important or large project that a creator has finished.

n. a creative work, especially a musical composition or a literary production, numbered to indicate the order of a composer's works. Often refers to a large-scale or significant achievement within an artist's career.

Examples

“This symphony is considered the composer's greatest opus.”

“After ten years of research, the professor finally published his historical opus on the industrial revolution.”

“While his early sketches showed promise, it was this sprawling, three-volume opus that secured his reputation as the preeminent novelist of his generation.”

Examples

simple

“This symphony is considered the composer's greatest opus.”

contextual

“After ten years of research, the professor finally published his historical opus on the industrial revolution.”

complex

“While his early sketches showed promise, it was this sprawling, three-volume opus that secured his reputation as the preeminent novelist of his generation.”

Usage

The plural form can be 'opuses' or the Latin 'opera'.

Real-World Examples

“Rejected by Sophie Ellis-Bextor, the minimalist dance-pop opus would become the defining song of Kylie’s career.”
The Guardian 13 Sept 2026

Etymology

Borrowed from Latin opus.

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

Related words

Domain

Music

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
Occasional
Level
C1 · Advanced
Updated

QR code

englishreference.com/q/opus

English Reference