Collaborators and requests welcome.
Crack/craic
Noun/adjective. I hardly ever use this one, but it came up the other day. Ríona’s definition:
It used always be spelt “crack” but in the last ten years or so, there’s been a tendency to hibernicize the spelling – “craic”.
When the crack is especially good, you’d say “Ah, the crack was ninety.”
A person can also embody craic. “Oh, you’ll have to meet so-and-so, she’s great craic.” A very high compliment.
Faff
Futzing, messing around on filler activities, procrastinating. Usually indulged in before leaving the house to do something unpleasant. Often the opening salvo in a domestic battle:
“Would you ever stop faffing and get in the car!”
Feck
All-purpose, indispensable term. Milder than “fuck”, closer to “frick” but more versatile. “Well, feck you anyway. You just fecked off this morning and left me no fecking cornflakes.” Old ladies can safely say this in Ireland now. Reached its most inspired use on the lips of Father Jack in the Channel Four series _Father Ted_.
There’s also an old Dublin use of “feck” to mean pilfer: early in Joyce’s _Portrait_, boys run away from school because “they had fecked cash from the rector’s room”.
Witter
Verb. To ramble on inanely.
Dervala.com 
There is a Clan MacIntyre legend the involves an annual payment of a calf and snowball. There is a question as to whether this payment to Clan Campbell was a land payment, a payment for a murder or a payment of fealty (blench duty). Is there anything in Brehon law that indicated payment of cattle or snowball for manslaughter?
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