Prepositions that mark the dative take the conjugated dative forms of the personal pronouns, thus *aig mi "at me" and *le iad "with them" are incorrect. Such prepositions have conjugated forms, like verbs (see Inflected preposition). The following table presents some commonly used paradigms.
| + | mi "me" |
thu "you, sg. fam." |
e "him" |
i "her" |
sinn "us" |
sibh "you, pl." |
iad "them" | |
| aig | "at" | agam | agad | aige | aice | againn | agaibh | aca |
| air | "on" | orm | ort | air | oirre | oirnn | oirbh | orra |
| le | "with" | leam | leat | leis | leatha | leinn | leibh | leotha |
| ann an | "in" | annam | annad | ann | innte | annainn | annaibh | annta |
| do | "to, for" | dhomh | dhut | dha | dhi | dhuinn | dhuibh | dhaibh |
Like the personal pronouns, inflected prepositions have emphatic forms derived by adding the following suffixes:
| + | sa | sa | san | se | e | se | san | |
|---|---|---|---|---|---|---|---|---|
| aig | "at" | agamsa | agadsa | aigesan | aicese | againne | agaibhse | acasan |
| air | "on" | ormsa | ortsa | airsan | oirrese | oirnne | oirbhse | orrasan |
| le | "with" | leamsa | leatsa | leisan | leathase | leinne | leibhse | leothasan |
| ann an | "in" | annamsa | annadsa | annsan | inntese | annainne | annaibhse | anntasan |
| do | "to, for" | dhomhsa | dhutsa | dhasan | dhise | dhuinne | dhuibhse | dhaibhsan |