Craic

n.

Heard in Kilkenny, Sligo, Dublin, Roscommon, Derry and Galway

The quintessential Irish measure of atmosphere, conversation, fun, and general good times.

In use

We went into town for a quiet pint and the craic was mighty altogether!

Posh English

We ventured into town for a quiet ale and the merriment proved to be exceptionally agreeable.

Same phrase, other counties