The most common and most likely answer to this crossword clue is the 10 letter word IRRESOLUTE
I've seen this crossword clue in Financial Times
I
R
R
E
S
O
L
U
T
E
More clues leading to the result IRRESOLUTE
- Not sure what to go for: Rocky or True Lies?
- Shilly-shallying Tories rule in topsy- turvy fashion
- Indecisive Tories rule unstably
- Liberal Tories rule sitting on the fence
- Dubious lore is true? Nonsense!
- Uncertain Tories rule haphazardly
- Leisure or time initially wasted sitting on the fence?
- Tories’ rule broken, lacking purpose …
- True, lies, or possibly uncertain
- Tories rule in unsettled fashion, lacking clear purpose
Buddy explains!

The straight part
We know that "sitting on the fence" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sitting on the fence = irresolute.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 IRRESOLUTE mean?
IRRESOLUTE adjective- Undecided or unsure how to act
- Indecisive or lacking in resolution