The most common and most likely answer to this crossword clue is the 7 letter word LITHEST
I've seen this crossword clue in The Daily Telegraph
L
I
T
H
E
S
T
More clues leading to the result LITHEST
- Table cut up by the most agile
- None more graceful than this cultivated thistle
- Incline to keep article that’s most flexible
- Most flexible gymnast finally on horse, drained during schedule
- Most agile male after time appearing in roll of names
- Most flexible article in inventory
- Roster includes the most agile
- Most flexible article carried in catalog
Buddy explains!

The straight part
We know that "Most agile" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case most agile = lithest.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 LITHEST mean?
LITHEST adjective- Mild; calm.
- Slim but not skinny.
- Capable of being easily bent; flexible.
- Adaptable.