About this phrase
Is is the copula.
Breá is an adverb that means fine.
Thus, is breá…: …is fine.
Examples
- Is breá liom é: I like it very much indeed (literally, 'it is fine with me').
- Is breá an capall é: he's a fine horse.
- Is breá an bhó í: she's a fine cow.
- Capall breá: a fine horse.
- Bó bhreá: a fine cow.