o.
The nineteenth letter of the Welsh alphabet, called o and written in the Latin script; preceded by n and followed by p.
Meaning & usage
The nineteenth letter of the Welsh alphabet, called o and written in the Latin script; preceded by n and followed by p.
from
Aethon ni o Gaerdydd i Abertawe.
of, out of (partitive)
Roedd llawer o frain yn y coed.
Mae'r tri ohonyn nhw'n dweud celwydd.
Connects an adjective modifying another adjective (equivalent to adverb + adjective in English)
arbennig o bwysig
ofnadwy o garedig
Connects a multi-word numeral to a plural noun
Mae pedwar deg saith o weithwyr gyda'r cwmni.
Where this word comes from
From Proto-Brythonic *ọ (stressed allomorph of *a), from Proto-Celtic *au, from Proto-Indo-European *h₂ew (“away, off”).
The name of the Latin script letter O/o.
he, him
Where this word comes from
Aphetic form of efô, reinforced form of ef
if
whether
Where this word comes from
Possibly a conjunctive use of Etymology 3. Compare Old Irish ó (“when”).
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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.