Cat

n.

Heard in Tipperary, Kerry, Armagh, Donegal, Waterford, Wicklow, Antrim, Wexford, Cork and Dublin

Appalling, dreadful, or of the lowest possible standard.

In use

The weather for the match today was cat altogether like!

Posh English

The meteorological conditions for the sporting fixture today were thoroughly dreadful!

Same phrase, other counties