ceathair

Irish

Irish numbers ^(edit)

	40[a], [b], [c]
←  3	4	5  →
Cardinal: ceathair     Ordinal: ceathrú     Personal: ceathrar     Attributive: ceithre

Etymology

From Old Irish cethair, from Proto-Celtic *kʷetwores, from earlier Proto-Indo-European *kʷetwóres.

Pronunciation

• IPA^(key): /ˈcahəɾʲ/
• (Cois Fharraige) IPA^(key): /ˈcæɾʲ/

Numeral

ceathair

1. four

Usage notes

• This form is used independently, not with a noun that it modifies. It is always preceded by the particle a.

• a ceathair, a cúig, a sé... ― four, five, six...
• deich a ceathair, deich a cúig, deich a sé... ― fourteen, fifteen, sixteen...
• bus a ceathair ― bus number four
• a ceathair a chlog ― four o’clock

Derived terms

• ceathrú (ordinal)

Related terms

• ceathrar (used to modify personal nouns)
• ceithre (used to modify non-personal nouns)

Mutation

Irish mutation
Radical	Lenition	Eclipsis
ceathair	cheathair	gceathair
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.