The most common and most likely answer to this crossword clue is the 9 letter word SUSPENDER
I've seen this crossword clue in Financial Times
S
U
S
P
E
N
D
E
R
More clues leading to the result SUSPENDER
- One to support stocking revolutionary American poet
- Hose attachmentâs main sales feature in poster
- One that supports stocking revolutionary American poet
- Shopaholic needs us to provide material support
- Struggling Spurs need support
- This supports stocking revolutionary American poet
- Upset American consumer that keeps stocking up
- One pays to purchase useless underwear article
- Spurs need crazy supporter
- One hangs revolutionary South American up outside prison
Buddy explains!

The straight part
We know that "support" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case support = suspender.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 SUSPENDER mean?
SUSPENDER noun- Something or someone who suspends.
- An item of apparel consisting of a strap worn over the shoulder and used to hold up trousers. Called braces in other parts of the world.
- An item of apparel used to hold up a sock or (now especially) a stocking, such as a garter, or each of the fastening-straps attached to a corset or suspender belt.