The most common and most likely answer to this crossword clue is the 7 letter word INEXACT
I've seen this crossword clue in The Times
I
N
E
X
A
C
T
More clues leading to the result INEXACT
- Tax cine reels? Not right
- Popular turn entertaining former partner? That's not quite right
- One following account breaks out
- Popular old routine? Not accurate
- Rough during performance that involves old flame
- Head of information succeeding in capturing account with some uncertainty
- Out or not out? England cross with bit of play
- One name on former statute is not quite right
- Nonet perform, gathering tips from nouvelle vague
- Loose one succeeding without a cent
Buddy explains!

The straight part
We know that "out" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case out = inexact.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 INEXACT mean?
INEXACT adjective- Imperfectly conforming; exceeding or falling short in some respect.
- Imprecisely or indefinitely conceived or stated.
- (of a differential) having a path-dependent integral