The most common and most likely answer to this crossword clue is the 10 letter word READY-MADE
I've seen this crossword clue in The Guardian
R
E
A
D
Y
-
M
A
D
E
More clues leading to the result READY-MADE
- Unoriginal confused daydream about theatre's closure
- Unoriginal drama eyed suspiciously
- Prepared in advance to study old article about crackpot
- Ideally suited tag line for forger?
- Off-the-peg item eager assistant talked of?
- Willing? Sounds like servant may be ideally suited
- Willing servant reportedly available immediately
- Somewhat dreamy about head being not hard, not original
- Money earned available immediately
Buddy explains!

The straight part
We know that "Off-the-peg item" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case off-the-peg item = ready-made.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 READY-MADE mean?
READY-MADE noun- A ready-made object.
- Pre-existing or made previously and suitable for use without (further) preparation or modification; comparable with regard to the amount of preparation required.
- Made in advance to a standard specification.
- Made or prepared in advance and used regularly or habitually without original thought.