The most common and most likely answer to this crossword clue is the 6 letter word HAPPEN
I've seen this crossword clue in The Daily Telegraph
H
A
P
P
E
N
More clues leading to the result HAPPEN
- Fellow Conservative avoids prison by chance
- ot quite hang on, faced with hard chance
- Take place of some chap penalised
- Take place as chaps spend without limits
- Come to pass, maybe, in the Yorkshire Dales
- Exclamation of disgust about animal enclosure getting result
- Fall out, apparently, when there’s female around
- Unboundedly delighted by margins of election result
- Female boxing program to materialise
- Laugh at pages before central events occur
Buddy explains!

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 HAPPEN mean?
HAPPEN verb- To occur or take place.
- To happen to; to befall.
- (with infinitive) To do or occur by chance or unexpectedly.
- (followed by on or upon) To encounter by chance.
- Maybe, perhaps.