The most common and most likely answer to this crossword clue is the 9 letter word IMPRECISE
I
M
P
R
E
C
I
S
E
More clues leading to the result IMPRECISE
- Heading of mother’s recipe is wildly inaccurate
- One covers for magazine including summary that’s inaccurate
- Urchin regularly downed fried chips — ‘veg’ would be inaccurate
- Mischievous child concerned about half of HM Excise being inexact
- Vague anger around politician thus upset with Spain
- Loose summary penned by the setter in more than one case
- One’s abstract expressionism’s beginning without detail
- Vague horror on the increase around bankers’ district
Buddy explains!

The straight part
We know that "Loose" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case loose = imprecise.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 IMPRECISE mean?
IMPRECISE adjective- Not precise or exact; containing some error or uncertainty