The most common and most likely answer to this crossword clue is the 8 letter word TEAMWORK
I've seen this crossword clue in The Daily Telegraph
T
E
A
M
W
O
R
K
More clues leading to the result TEAMWORK
- Sideline co-operation
- Mate? We get on with this
- Collaboration from me at sporting function
- Secret of much sporting success one can never produce
- Close co-operation must destroy worm found in wood
- Sounds like rain — calling for co-operation
- Troubled mate has job getting cooperation
- Combined effort of couple displacing leader in dynamic market
- Coöperative undertaking squished worm in wood
- Side labour to provide group action
Buddy explains!
The straight part
We know that "group action" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case group action = teamwork.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 TEAMWORK mean?
TEAMWORK noun- The cooperative effort of a team of people to achieve a common goal.