- If two nouns are next to each other and they form some sort of relationship then the second word will be in the tuiseal ginideach meaning the spelling of the second word will change.
answer: bean an tí
- if an action noun and another noun come together that means the second word must be put in the tuiseal ginideach and the spelling must be changed.
- If a compound preposition (réamhfhocail comhshuite) comes before a noun then that noun will go into the tuiseal ginideach
- ar aghaidh
- ar chúl
- ar feadh
- ar fud
- ar son
- de réir
- le linn
- os comhair
- i gcomhair
- i lár
- i láthair
- i measc
- in aice
- i dtreo
- le haghaidh
- tar éis
the tuiseal ginideach is also applied with the following prepositions..
- chun
- dála
- timpeall
- trasna
- cois