craic killer

Irish: fun, entertainment, good vibes. "What's the craic?" = "what's going on?" "Great craic" = a brilliant night. Irish travelers insist this word does not translate and the English monosyllable "fun" is inadequate. They are correct on both counts.

Someone who reliably generates craic wherever they go — the person whose arrival turns a flat gathering into a proper session. A craicer doesn't try; the fun just happens around them. They know the right stories, the right songs, and exactly when to buy a round. Not to be confused with a try-hard who performs fun — a genuine craicer is effortless, magnetic, and usually the last one standing at the end of the night.

(Ireland) What's happening?.

When an attempt at craic falls completely flat — the joke lands wrong, the session dies early, the venue is empty, or someone makes things awkward right when the night was building momentum. A craic fail is felt by the whole group and usually met with a silence that speaks volumes. In Irish social culture, where the ability to generate fun is a genuine social currency, a craic fail is embarrassing. The bar was set, and it was not cleared.

(slang, idiomatic) Something that or someone who spoils an otherwise enjoyable event.