Sound

n.

Heard in Dublin, Kilkenny, Galway, Sligo, Westmeath, Limerick, Louth and Roscommon

Satisfactory or agreeable, whether referring to a situation or a person.

In use

See yer man, he's dead sound...are you happy enough with that?...'yeah sound'.

Posh English

Observe that fellow. He is thoroughly decent. Are you content with that? Yes, splendid.

Same phrase, other counties