The most common and most likely answer to this crossword clue is the 5 letter word MAYBE
I've seen this crossword clue in The Guardian
M
A
Y
B
E
More clues leading to the result MAYBE
- Springtime sound from insect, perhaps
- West? Northbound via the interior, perhaps
- Part of spring attached to 50% of beds, perhaps
- Some mistake by ambassador reversed, perhaps
- For all one knows millions certainly exist
- Times up in West perhaps?
- Former PM extremely believable? Possibly
- Spring month starts from broaching every possibility
- A little toe, by a miracle, put back perhaps
- Perhaps sentence by a magistrate holds up
Buddy explains!

The straight part
We know that "Perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case perhaps = maybe.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 MAYBE mean?
MAYBE noun- Something that is possibly true.
- An answer that shows neither agreement nor disagreement.
- A future event that may or may not happen.
- Possible; uncertain.
- Modifies a verb, indicating a lack of certainty: it may be that...
- (as a pro-sentence) Perhaps that is true (expressing no commitment to a decision or a neutral viewpoint to a statement).