The most common and most likely answer to this crossword clue is the 5 letter word SCRAM
I've seen this crossword clue in The Guardian
S
C
R
A
M
More clues leading to the result SCRAM
- Bolt that is attached to drive
- Puny little son needs to eat greedily
- Sadistic, extremely, descending on farm animal to beat it
- Go away with stuff after start of sales
- Small crowd get lost
- Involved with swindle, right to get out hurriedly
- Rival of S. Ovett? Get away!
- Small crowd go away
- Bolt, in brief, Olympic medallist
- Leave small stuff
Buddy explains!

The straight part
We know that "go away" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case go away = scram.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 SCRAM mean?
SCRAM verb- Leave in a hurry, go away.
- The emergency shutdown device of a nuclear reactor, originally specifically by insertion of one or more safety control rods.
- An activation of the emergency shutdown of a nuclear reactor.
- (by extension) Any emergency shutdown.
- To use the shutdown or safety device of a nuclear reactor.
- (by extension) To use any emergency shutdown.
- A scratch, especially caused by claws or fingernails.
- Scratch with claws or fingernails.