The most common and most likely answer to this crossword clue is the 4 letter word ONER
I've seen this crossword clue in The Guardian
O
N
E
R
More clues leading to the result ONER
- Solitary type loses head – a fantastic person
- Expert on royalty
- Note doomed individual losing head
- Guerrilla can also appear with this remarkable person
- Note about US city
- Solitary person would be left with this single thing
- Big lie, like Johnson’s last two to the queen?
- Returning to divorce city may be a heavy blow
- Bouncer from Johnson, erratic
- John Kerr regularly proves to be expert
Buddy explains!
The straight part
We know that "this single thing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case this single thing = oner.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 ONER mean?
ONER noun- An extraordinary individual.
- A small marble of little worth in children's games.
- A conker that has won one match.