The most common and most likely answer to this crossword clue is the 7 letter word REALIGN
I've seen this crossword clue in The Guardian
R
E
A
L
I
G
N
More clues leading to the result REALIGN
- Get into a row once again
- Alter position of concrete sign after son leaves
- Adjust rule covering call centre
- A Liberal in government put straight again
- Straighten a line: rule round it
- Material that’s grand in fashionable shift
- A Liberal breaks rule to switch allegiance
- Genuine gin cocktail set one straight again
- Adjust position of concrete sign having small omission
- Concrete marker with singular omission put straight again
Buddy explains!

The straight part
We know that "put straight again" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case put straight again = realign.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 REALIGN mean?
REALIGN verb- To bring back into alignment.
- To align again or anew.