The most common and most likely answer to this crossword clue is the 7 letter word ACQUITS
I've seen this crossword clue in The Guardian
A
C
Q
U
I
T
S
More clues leading to the result ACQUITS
Buddy explains!
The straight part
We know that "Doesn’t put in prison" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case doesn’t put in prison = acquits.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 ACQUITS mean?
ACQUITS verb- To declare or find innocent or not guilty.
- To discharge (for example, a claim or debt); to clear off, to pay off; to fulfil.
- Followed by of (and formerly by from): to discharge, release, or set free from a burden, duty, liability, or obligation, or from an accusation or charge.
- To bear or conduct oneself; to perform one's part.
- To clear oneself.
- To release, to rescue, to set free.
- To pay for; to atone for.