The most common and most likely answer to this crossword clue is the 4 letter word SUCH
S
U
C
H
Buddy explains!

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 SUCH mean?
SUCH noun- Something being indicated that is similar to something else.
- A person, a thing, people or things like the one or ones already mentioned.