overwordExplorer
WELSH · A WORD WITH POSSIBILITIES

Iau.

Jupiter

3 characters1 syllables approx.Cymraeg language

Meaning & usage

name/jaɨ̯/North-Wales/jai̯/South-Wales, colloquial, standard/jɔi̯/South-Wales, colloquial

  1. Jupiter

    Roman · masculine

  2. abbreviation of dydd Iau (“Thursday”)

    abbreviation · alt-of · masculine
Where this word comes from

From Middle Welsh Ieu, from Proto-Brythonic *Yow, from Latin Iovem (accusative of Iuppiter), from Proto-Indo-European *dyew- (“sky”). Compare Breton Yaou, Cornish Yow.

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Iau studioIau workshello, Iau

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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.