The most common and most likely answer to this crossword clue is the 5 letter word EVENT
I've seen this crossword clue in Independent
E
V
E
N
T
More clues leading to the result EVENT
- Big match, perhaps, with no winner determined by end of it
- Like two originally trying high jump, say
- Badminton competition's opening by end of June
- Stop dispensing with public relations function
- Personage finally opening show?
- Last in line opening competition
- Regular time in 1500 metres maybe
- Sporting contest opening online, as it were?
- Incident in flat ending in arrest
- Biblical woman not disheartened - it happens!
Buddy explains!

The straight part
We know that "show" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case show = event.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 EVENT mean?
EVENT noun- An occurrence; something that happens.
- A prearranged social activity (function, etc.)
- One of several contests that combine to make up a competition.
- An end result; an outcome (now chiefly in phrases).
- A point in spacetime having three spatial coordinates and one temporal coordinate.
- A possible action that the user can perform that is monitored by an application or the operating system (event listener). When an event occurs an event handler is called which performs a specific task.
- A set of some of the possible outcomes; a subset of the sample space.
- An affair in hand; business; enterprise.
- An episode of severe health conditions.
- To occur, take place.
- To be emitted or breathed out; to evaporate.
- To expose to the air, ventilate.