Words for week and related words in Celtic languages.

Old Irish (Goídelc) sechtmain = week
Irish (Gaeilge) seachtain [ˈʃaxt̪ˠənʲ] = week
an tseachtain seo caite = last week
an tseachtain seo = this week
an tseachtain seo chugainn = next week
deireadh seachtaine = weekend
coicís = fortnight
Scottish Gaelic (Gàidhlig) seachdain [ʃɛxgɛn̪ʲ] = week
an t-seachdain sa chaidh = last week
an t-seachdain-sa = this week
an ath-sheachdain = next week
deireadh-seachdain / ceann-seachdain = weekend
cola-deug = fortnight
Manx (Gaelg) shiaghtin = week
yn çhiaghtyn s’jerree, yn çhiaghtyn shoh chaie = last week
yn çhiaghtin shoh = this week
yn çhiaghtin er giyn, yn çhiaghtin shoh çheet = next week
jerrey shiaghtin = weekend
kegeesh = fortnight
Welsh (Cymraeg) wythnos [ˈʊɨ̯θnɔs / ˈʊi̯θnɔs] = week
yr wythnos diwetha(f) = last week
yr wythnos hon = this week
yr wythnos nesa(f) = next week
penwythnos = weekend
pythefnos = fortnight
Cornish (Kernewek) seythen [ˈsəiθən] = week
an seythen diwettha = last week
an seythen ma = this week
an seythen nessa = next week
pennseythen [pɛnsəiθən] = weekend
hanter-mis = fortnight
Breton (Brezhoneg) sizhun [ˈsiː.zỹn] = week
ar sizhun diwezhañ = last week
ar sizhun-mañ = this week
ar sizhun nesañ = next week
diben-sizhun = weekend
pemzektez = fortnight

Weeks in Celtic languages

Etymology (Irish, Scottish Gaelic, Manx): from the Late Latin septimāna (week), from the Latin septimus (seventh) [source]. The Cornish and Breton words are also related to seven.

Etymology (wythnos): from wyth (eight) and nos (night) – so a week in Welsh has eight nights, counting from midnight on Saturday to the following Saturday night.

Words marked with a * are reconstructions.

The names of the months, days and seasons in Celtic languages

Sources: Wiktionary, Am Faclair Beag, Online Manx Dictionary, Teanglann.ie, Geiriadur Prifysgol Cymru, Gerlyver Kernewek, Globse

5 thoughts on “Weeks

    1. I’m not sure whether you’re aware, but this so-called ‘Modern Gaulish’ is a very recent reconstruction by enthusiasts whose methodology is very scant, and quite rickety.

      There is no ‘modern Gaulish’. Gaulish became extinct in the 6th century, and its written attestations are very few indeed. Certainly not enough to reconstruct a language.

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