opus.
need; work; fortifications (pl.), works; [opus est => is useful, beneficial];
Meaning & usage
work, labor, accomplishment
workmanship, artwork, work (of art, literature, etc.)
need, necessity
opus esse +nom. or +abl. of the thing needed
alicui opus est aliquo
art, skill (when in the ablative)
work (of God), deed, (miraculous) work
extent
masonry, construction technique, construction material
opus africanum, opus craticum, opus emplectum, opus gallicum, opus incertum, opus isodomum, opus latericium, opus mixtum, opus quadratum, opus reticulatum, opus vittatum, etc.
Where this word comes from
From Proto-Italic *opos, from a Proto-Indo-European *h₃ép-os (“work”), from the verbal root *h₃ep- (“to work”), whence also ops and omnis. Cognates include Sanskrit अपस् (ápas, “work, action”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.