The most common and most likely answer to this crossword clue is the 8 letter word REUNITED
I've seen this crossword clue in The Daily Telegraph
R
E
U
N
I
T
E
D
More clues leading to the result REUNITED
- Group lying in grass, back to remember the good old days?
- One again inert, due to move
- Made up name in erudite broadcast
- Group that cuts grass in meeting again
- Any number in erudite mingling, as old students meeting each other again?
- One feeding ruminants, back together again following separation
- Daughter’s with retinue about to get married again
Buddy explains!

The straight part
We know that "together again following separation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case together again following separation = reunited.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 REUNITED mean?
REUNITED verb- To unite again.
- United again after being separated