The most common and most likely answer to this crossword clue is the 9 letter word OUTFITTER
I've seen this crossword clue in The Times
O
U
T
F
I
T
T
E
R
More clues leading to the result OUTFITTER
- Clothier’s forbidden more trim
- Clothes shop known to have better suiting?
- Presumably not so well in shop?
- Reveal more attractive clothes come from here
- Couturier exposed by assembly man
- Not in closet, sexier clothes come from here
- Reveal more appropriate supplier
- Old-fashioned skilled mechanic who might suit you?
- Tradesman explaining how he hopes to leave hospital?
- Tailor is abroad, getting more qualified
Buddy explains!

The straight part
We know that "Clothier’s" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case clothier’s = outfitter.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 OUTFITTER mean?
OUTFITTER noun- A person or shop that sells specialized clothes and equipment.
- A business that provides services for outdoor activities including accommodations.