The most common and most likely answer to this crossword clue is the 4 letter word SHUN
I've seen this crossword clue in Financial Times
S
H
U
N
More clues leading to the result SHUN
- Resist SM’s order on parade ground
- Ignore informal parade ground command
- Avoid newspaper offered around hotel
- Deliberately avoid attention!
- Avoid clipped military command
- Hot where baskers are lying? Those at ease respond to it
- Avoid head of state with vandal
- Avoid getting hot in daylight
- Avoid bypass — waste of time
- Avoid star being around husband
Buddy explains!

The straight part
We know that "Avoid" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case avoid = shun.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 SHUN mean?
SHUN verb- To avoid, especially persistently.
- To escape (a threatening evil, an unwelcome task etc).
- To screen, hide.
- To shove, push.