The most common and most likely answer to this crossword clue is the 8 letter word OVERSTAY
I've seen this crossword clue in The Times
O
V
E
R
S
T
A
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More clues leading to the result OVERSTAY
Buddy explains!

The straight part
We know that "hang around for too long" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hang around for too long = overstay.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 OVERSTAY mean?
OVERSTAY noun- The act of staying too long.
- To remain present after the agreed or appropriate departure time.
- To remain present beyond the limits of.