The most common and most likely answer to this crossword clue is the 5 letter word ADIEU
I've seen this crossword clue in The Guardian
A
D
I
E
U
More clues leading to the result ADIEU
- I’m going to pass on gold rings
- A day that is top-class, the last word?
- Bill that is originally unpaid for so long
- Notice that is at front of university for so long
- Gold-edged stamp is so long
- Cash in one’s chips in gold — farewell!
- Buy the farm in Australia — bye-bye to Marianne et les autres
- A fade out in the middle is so long
- All the best go west, getting into gold
- Share Jill Masterson's fate? Cheerio!
Buddy explains!
The straight part
We know that "I’m going" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i’m going = adieu.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 ADIEU mean?
ADIEU noun- A farewell, a goodbye; especially a fond farewell, or a lasting or permanent farewell.
- Said to wish a final farewell; goodbye.