The most common and most likely answer to this crossword clue is the 5 letter word CRAIC
I've seen this crossword clue in Independent
C
R
A
I
C
More clues leading to the result CRAIC
- In Irish bars you'll get this cloudy pop cold
- Fun ignoring odds: score first-class century
- Bend over backwards, in charge of providing Irish pub fun?
- Credit given to adult in charge of a good time
- Academy dons mostly cramp fun
- Shrink from weak end of fun filling in this setter endlessly
- Top commander entertaining artist to have a good time in Dublin?
- Ignore the odds to score first-class century for fun
- Artist first person admitted to cricket club in good time
Buddy explains!

The straight part
We know that "fun" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fun = craic.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CRAIC mean?
CRAIC noun- Fun, especially through enjoyable company, a pleasant conversation.