Grand

adj.

Heard in Kilkenny, Meath, Carlow, Donegal, Wexford, Kerry, Dublin, Tipperary and Louth

Satisfactory, acceptable, or in a state of good health and wellbeing.

In use

Ah yeah, don't you be worrying about me, I'm grand so I am.

Posh English

Ah yes, pray do not concern yourself with my affairs, as I am perfectly fine, thank you.

Same phrase, other counties