The most common and most likely answer to this crossword clue is the 7 letter word ABUSERS
A
B
U
S
E
R
S
More clues leading to the result ABUSERS
Buddy explains!

The straight part
We know that "Offenders" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case offenders = abusers.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 ABUSERS mean?
ABUSERS noun- One who abuses someone or something.
- One who uses in an illegal or wrongful use.