The most common and most likely answer to this crossword clue is the 11 letter word ALTERCATION
I've seen this crossword clue in The Times
A
L
T
E
R
C
A
T
I
O
N
More clues leading to the result ALTERCATION
- Row over Atlantic, losing very badly
- Leader of Conservatives blocking change leads to dispute
- Lace into rat involved in quarrel
- Reform disrupted by constant argument
- Change about a hundred for a difference
- Head of coin in change causes heated row
- Rounding first of chairs, change row
- Row of coins originally accepted in change
- Change something positive in row
- Change about to be introduced making for quarrel
Buddy explains!

The straight part
We know that "heated row" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case heated row = altercation.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 ALTERCATION mean?
ALTERCATION noun- Heated or angry dispute