Sound

n.

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

Thanks very much. Also, a decent or reliable person.

In use

Hers a tenner...Sound man!" "Sound for a lend of the fiver.' That Johnny fella is dead sound.

Posh English

Here is a tenner. Most kind of you, old chap! That Johnny fellow is thoroughly decent.

Same phrase, other counties