The most common and most likely answer to this crossword clue is the 9 letter word TREACHERY
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More clues leading to the result TREACHERY
- Tutor disturbed by start of rebellious youth’s initial disloyalty
- Two-timing Republican aboard coach meeting Yankee
- Betrayal years after Romeo is embraced by instructor
- Attempt to imprison every queen could be this
- Child’s hero is at the centre of this double-dealing
- Exhibited by love rat and every one shafting poor Terry
- Go to restrain educator blowing top, showing lack of loyalty
- Blunt deed almost achieved during test
- Serious crime extent evident in assault without club
- Attempt to capture soldiers joining a guerrilla in perfidious conduct
Buddy explains!

The straight part
We know that "exhibited by love rat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case exhibited by love rat = treachery.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 TREACHERY mean?
TREACHERY noun- Deliberate, often calculated, disregard for trust or faith.
- The act of violating the confidence of another, usually for personal gain.
- Treason.