cethair

Old Irish

Etymology

From Proto-Celtic *kʷetwares, from Proto-Indo-European *kʷetwóres.

Pronunciation

• IPA^(key): /ˈkʲeθirʲ/

Numeral

Old Irish cardinal numbers

<  3	4	5  >
Cardinal : cethair     Ordinal : cethramad

cethair (feminine cetheoir)

1. four

Derived terms

• cethrar

Descendants

• Irish: ceathair, ceithre
• Manx: kiare
• Scottish Gaelic: ceithir

Mutation

Old Irish mutation
Radical	Lenition	Nasalization
cethair	chethair	cethair pronounced with /ɡ(ʲ)-/
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “cethair”, in eDIL: Electronic Dictionary of the Irish Language