ceo.
fog, mist
Meaning & usage
fog, mist
haze
vapour
nothing, anything
Níl tú ag insint ceo den fhírinne dhom.
Where this word comes from
From Old Irish céo, from Proto-Celtic *kiwos (“fog”), from Proto-Indo-European *(s)ḱih₃-wó-s (“gray”), from *(s)ḱeh₃- (“darkness, shadow”). Celtic relatives include Manx kay and Scottish Gaelic ceò; more distant cognates include Sanskrit श्या॒व (śyāvá, “dark brown”) and Russian си́вый (sívyj, “gray”).
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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.