The most common and most likely answer to this crossword clue is the 3 plus 5 letter word SIT TIGHT
I've seen this crossword clue in The Guardian
S
I
T
T
I
G
H
T
More clues leading to the result SIT TIGHT
- Don’t budge, being too drunk to stand up?
- One sober person in view to avoid action
- Be an MP and mean to stay put!
- Model getting drunk? Wait patiently
- Model under the influence of drink? Don’t move!
- Keep one’s place — international race in view
- Keep one’s place – international race in view
- Model getting drunk to refrain from participating
- Don’t go getting model drunk
- Hold one’s position — or pose drunkenly
Buddy explains!

The straight part
We know that "Keep one’s place" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case keep one’s place = sit tight.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.