Tuiseal Ginideach

Tuiseal Ginideach: Genetive case

Athraíonn

  • Ea → i

  • Éa → éi

  • Ia → éi

  • Ío → í

  • Ach → aigh

  • Eah → igh

  • Íoch → ígh

When/Where to use TG?

Possession

  • Of the/The boy’s hat

  • Example: Eirball an chait

Quantities/Amounts

  • A lán/neart/go leor/an chuid/an iomarca/béagan

  • Example: Tá an iomarca airgid

After a verbal noun

  • After ag

  • Example: ag ithe an dinnéir

After a complex preposition

  • in aghaidh/faoi bhun/taobh thiar/ar thaobh

  • Example: Tá sí ag seasamh ar thaobh an bhóthair

After trasna/chun/timpeall

  • Example: Timpeall an domhain

When there’s a connection between 2 nouns

  • Example: Mála scoile

How to use TG?

Feminine nouns

  • An → na

  • Drop the h/séimhiú

  • Make the noun caol → ends on an e

  • Example: Biachlár na bialainne

  • Places that end in lann → feminine

  • Example: Pictúirlann

Exception 1: words ending in (a)íocht

  • Add ‘a’

  • Example: An club dramaíochta

Exception 2: feminine nouns ending in (e)ach

  • (E)ach → (a)í

  • Example: solas na gealaí

Exception 3

  • An bheann

  • Example: mala na mná

Most common feminine noun in the TG

  1. Ar fud na tíre

  2. In aghaidh na bliana

  3. I rith na míosa

  4. Ag deireadh na seachtaine

  5. Ag oscailt na fuinneoige

  6. Ag freagairt na ceiste

  7. Ag réiteach na faidhbe

  8. Muintir na hÉireann

  9. Timpeall na háite

  10. Geataí na scoile

Masculine nouns

  • Add a h/séimhiú

  • Make the noun caol → add an i at the end

  • Example: an chamáin

Exception 1: professions ending in ‘ir’

  • Dochtúir/feirmeoir/pluimbéir

  • Remove the last ‘i’

  • Add an ‘a’ at the end

  • Example: mála dochtúra

Exception 2: masculine nouns ending in (e)ach

  • (E)ach → aigh

  • Example: boladh an deataigh

Most common masculine noun in the TG

  1. Ainm an fhir

  2. Deireadh an scéil

  3. Ar fud an domhain

  4. Ag léamh an dáin

  5. Doras an tí

  6. Carr an bhuachalla

  7. Barr an leathanaigh

  8. Timpeall an chontae (words ending in a vowel don’t change)

  9. I rith an lae

  10. Gúna an chailín (cailín is masculine as Gaeilge