The most common and most likely answer to this crossword clue is the 4 plus 3 letter word TURN OUT
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More clues leading to the result TURN OUT
Buddy explains!

The straight part
We know that "Evert/to make an appearance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case evert/to make an appearance = turn out.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 TURN OUT mean?
TURN OUT noun- The act of coming forth.
- The number of people who attend or participate in an event (especially an election) or are present at a venue.
- A place to pull off a road.
- A place where moveable rails allow a train to switch tracks; a set of points.
- A quitting of employment for the purpose of forcing increase of wages; a strike.
- A striker.
- That which is prominently brought forward or exhibited; hence, an equipage.
- Net quantity of produce yielded.