The most common and most likely answer to this crossword clue is the 8 letter word FRICTION
I've seen this crossword clue in The Daily Telegraph
F
R
I
C
T
I
O
N
More clues leading to the result FRICTION
- Lie about Republican conflict
- Lie about Republican wrangling
- Lie about Republican disharmony
- Lie about Romeo in disagreement
- Novels etc about end of war and conflict
- Lie about side causing bad feeling
- Story about the end of inner conflict
- Tension caused by lie about king
- Romance 9 25 leads to chafing
- Disagreement about a dash of reality in romance
Buddy explains!

The straight part
We know that "conflict" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case conflict = friction.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 FRICTION mean?
FRICTION noun- The rubbing of one object or surface against another.
- A force that resists the relative motion or tendency to such motion of two bodies in contact.
- Massage of the body to restore circulation.
- Conflict, as between persons having dissimilar ideas or interests; clash.
- (Second Sino-Japanese War) Conflict, as between the Communists and non-Hanjian Kuomintang forces.