o.
A letter of the Latin alphabet, written in the Latin script.
Meaning & usage
A letter of the Latin alphabet, written in the Latin script.
Where this word comes from
From Etruscan letter 𐌏 (o), from Ancient Greek letter ο (o, “omicron”), derived from the Phoenician letter 𐤏 (ʿ, “ayin”), from the Egyptian hieroglyph 𓁹.
The name of the Latin script letter O/o.
Where this word comes from
From the letter’s own long vowel sound. Compare οὖ (oû). An Etruscan etymon is not reconstructible, since Etruscan letter-names are unknown.
Oh! (expression of surprise, pain or joy)
Where this word comes from
Expressive. Etymology 3, particle sense 1 is semantic loan from Ancient Greek ὦ (ô). Older Latin uses prō or bare vocative forms exclusively.
O! (vocative particle)
Where this word comes from
Expressive. Etymology 3, particle sense 1 is semantic loan from Ancient Greek ὦ (ô). Older Latin uses prō or bare vocative forms exclusively.
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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.