The most common and most likely answer to this crossword clue is the 5 plus 4 letter word INTER ALIA
I've seen this crossword clue in Financial Times
I
N
T
E
R
A
L
I
A
More clues leading to the result INTER ALIA
- Trouble at airline among other things
- Missing volume, gap occasionally vital — this is one example
- Among other things mishandled at airline?
- Linear A with it for translation among other things
- Very lacking in space between Institute and Academy, from a bigger set
- Among others in a retail supply
- Bury one in a US city among other things
- Aren’t Ali and I unruly?
- Bury the greatest American among the others
- Bury one storyteller, mostly, among others
Buddy explains!

The straight part
We know that "from a bigger set" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case from a bigger set = inter alia.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.