From Wiktionary, the free dictionary
is dóigh (past/conditional ba dhóigh)
- there’s no doubt, it is probable (with go)
Is dóigh go bhfuil sé anseo.- No doubt he’s here; he’s probably here.
- it seems likely to (with le)
Is dóigh liom go bhfuil sí anseo.- I think she’s here; it seems likely to me that she’s here.