The most common and most likely answer to this crossword clue is the 10 letter word DIMINISHED
I've seen this crossword clue in Independent
D
I
M
I
N
I
S
H
E
D
More clues leading to the result DIMINISHED
- Spoiled, skirt inside that's shrunk
- Belittled and frustrated, the writer’s at home in this
- Smaller, gloomy home I left behind
- Became less dull in international cast
- Weakened, foolish Everyman, regularly unfit, dropped
- Cut, little girl fixed bandages
- Little lost after 50% diet? Cut down!
- It’s not bright in one small building that’s run down
- Finished nursing little girl, cut
- Got smaller car inside one outhouse by end of yard
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 DIMINISHED mean?
DIMINISHED verb- To make smaller.
- To become smaller.
- To lessen the authority or dignity of; to put down; to degrade; to abase; to weaken; to nerf (in gaming).
- To taper.
- To disappear gradually.
- To take away; to subtract.
- Lessened, reduced
- Made to seem less important, impressive, or valuable
- Reduced by a semitone