The most common and most likely answer to this crossword clue is the 10 letter word EVERYTHING
I've seen this crossword clue in Financial Times
E
V
E
R
Y
T
H
I
N
G
More clues leading to the result EVERYTHING
- All, for example, hairline fractures?
- All inside bandage, very thin gauze
- All done at last, exactly what’s needed
- 2, 7 and 23, say, keeping extremely slim
- Extremely lean cuts for one and all
- Extremely slender, for example, that’s about all
- Malnourished but tucking into — say — the lot
- All, for instance, should admit needing to gain weight
- All the gin? Very drunk!
- English jolly is a bad night for French tout.
Buddy explains!
The straight part
We know that "all" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case all = everything.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 EVERYTHING mean?
EVERYTHING pronoun- All the things under discussion.
- Many or most things.
- A state of well-being (from all parts of the whole).
- Considerable effort.
- The most important thing.