The most common and most likely answer to this crossword clue is the 3 plus 6 letter word OLD STAGER
I've seen this crossword clue in Financial Times
O
L
D
S
T
A
G
E
R
More clues leading to the result OLD STAGER
- Veteran playing eg at Lords
- One who’s experienced love, great LSD trips
- One's experienced men only in later years coming round
- Veteran sent up guns in unopened case
- Do exercises with largest warhorse
- One’s experienced chafing down below wearing tight leotards
- Barking dog alerts senior citizen
- Unopened file about male expert
- Veteran‘s an experienced producer?
- Hunted animal trapped by senior person with a lot of experience
Buddy explains!
The straight part
We know that "One’s experienced" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one’s experienced = old stager.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.