| Cé ? | who ? |
| Cé eile ? | who else ? |
| Cé hé seo / sin ? | who is this / that ? |
| Cé atá ann ? | who is there ? |
| Cé atá ag caint ? | who is speaking ? |
| Cé a rinne é seo ? | who did this ? |
| Cé leis é seo ? | who owns this ? |
| Cé aige a bhfuil ....? | who has the....? |
| Cé mhéad ? | how many / how much ? |
| Cé mhéad atá air ? | how much is it ? |
| . | . |
| Cad chuige ? | what for ? |
| Cad ina thaobh ? | what about it ? |
| Cad as duit ? | where are you from ? |
| . | . |
| Céard atá ort ? | what's wrong with you ? |
| Céard a bhfuair tú ? | what did you get ? |
| . | . |
| Cén áit ? | where ? |
| Cén fáth ? | why ? |
| Cén chaoi ? | how ? |
| Cén duine ? | who ? |
| Cén t-am é ? | what time is it ? |
| Cén aois tú ? | what age are you ? |
| Cén dath é sin ? | what colour is that ? |
| Cén lá den t-seachtain atá ann ? | what day of the week is it ? |
| . | . |
| Cá bhfuil sé ? | where is he? |
| Cá bhfuilimid anois ? | where are we now ? |
| Cár bhfuair tú é ? | where did you get it? |
| Cár fhág tú é ? | where did you leave it ? |
| Cár chuir tú é ? | where did you put it ? |