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Definition 2024

leath f ‎(genitive singular leithe, nominative plural leatha)

side; part, direction
half; part, portion
Is fearr leath ná meath.‎ ― Something is better than nothing. —Proverb

Declension of leath

Second declension

Bare forms

Case	Singular	Plural
Nominative	leath	leatha
Vocative	a leath	a leatha
Genitive	leithe	leath
Dative	leath leith (in certain phrases)	leatha

Terms derived from leath

a leath catha ‎(“his equal in battle”)
ar leath pá ‎(“at half-pay”)
ar leith, faoi leith ‎(“apart, separate; several, distinct; remarkable, special”)
do leith, do leath ‎(“on the side of, in the direction of”)
duine ar leith ‎(“a person apart; a remarkable person”)
go ceann dhá lá go leith ‎(“for a very long time”)
go leith ‎(“and a half”)

i leith ‎(“hither; aside, apart; thenceforth”, adverb)
i leith ‎(“in the direction of; tending towards; on the side of, in favour of; on behalf of, for the sake of; resorting to, trusting in, dependent on”)
i leith is go ‎(“as if”)
i leith le ‎(“in regard to”)
in áit ar leith, in áit faoi leith, in a place apart
leath aife ‎(“half-ebb”)
leath ar leath, leith ar leith ‎(“side by side, on both sides, respectively”)

leath bealaigh (go), leath slí (go) ‎(“half-way (to)”)
leath deiridh ‎(“back part; hind quarters”)
leath- ‎(“lying, turned, to one side; lopsided, tilted; one-sided, partial; half-, hemi-, semi-; half-grown; one of two, of a pair”)
leath tosaigh ‎(“forward part; fore quarter”)
leath tuile ‎(“half-flow”)
ó na ceithre leathaibh ‎(“from all quarters.”)

leath ‎(present analytic leathann, future analytic leathfaidh, verbal noun leathadh, past participle leata) (transitive, intransitive)

First Conjugation (A)

		singular			plural			relative	autonomous
		first	second	third	first	second	third	relative	autonomous
indicative	present	leathaim	leathann tú; leathair^†	leathann sé, sí	leathaimid	leathann sibh	leathann siad; leathaid^†	a leathann; a leathas / a leathann; a leathas	leatar
	past	leath mé; leathas	leath tú; leathais	leath sé, sí	leathamar; leath muid	leath sibh; leathabhair	leath siad; leathadar	a leath / ar leath*	leathadh
	past habitual	leathainn	leatá	leathadh sé, sí	leathaimis; leathadh muid	leathadh sibh	leathaidís; leathadh siad	a leathadh / ar leathadh*	leataí
	future	leathfaidh mé; leathfad	leathfaidh tú; leathfair^†	leathfaidh sé, sí	leathfaimid; leathfaidh muid	leathfaidh sibh	leathfaidh siad; leathfaid^†	a leathfaidh; a leathfas / a leathfaidh; a leathfas	leathfar
conditional		leathfainn	leathfá	leathfadh sé, sí	leathfaimis; leathfadh muid	leathfadh sibh	leathfaidís; leathfadh siad	a leathfadh / ar leathfadh*	leathfaí
subjunctive	present	go leatha mé; go leathad^†	go leatha tú; go leathair^†	go leatha sé, sí	go leathaimid; go leatha muid	go leatha sibh	go leatha siad; go leathaid^†	—	go leatar
subjunctive	past	dá leathainn	dá leatá	dá leathadh sé, sí	dá leathaimis; dá leathadh muid	dá leathadh sibh	dá leathaidís; dá leathadh siad	—	dá leataí
imperative		leathaim	leath	leathadh sé, sí	leathaimis	leathaigí; leathaidh^†	leathaidís	—	leatar
verbal noun		leathadh
past participle		leata

* Indirect relative
† Dialect form

↑ Matasović, Ranko (2009), “*letos”, in Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, ISBN 978-90-04-17336-1, pages 238-239

“leth” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.
“leaṫ” in Foclóir Gaeḋilge agus Béarla, Irish Texts Society, 1927, by Patrick S. Dinneen.
"leath" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.