The most common and most likely answer to this crossword clue is the 11 letter word RESTATEMENT
I've seen this crossword clue in The Daily Telegraph
R
E
S
T
A
T
E
M
E
N
T
Buddy explains!
The straight part
We know that "an alternative form of words" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case an alternative form of words = restatement.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 RESTATEMENT mean?
RESTATEMENT noun- The act of restating.
- A second or subsequent statement.