The most common and most likely answer to this crossword clue is the 13 letter word BRAINSTORMING
B
R
A
I
N
S
T
O
R
M
I
N
G
Buddy explains!
The straight part
We know that "intensive group discussion?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case intensive group discussion? = brainstorming.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 BRAINSTORMING mean?
BRAINSTORMING verb- To investigate something, or solve a problem using brainstorming.
- To participate in a brainstorming session.
- A method of problem solving in which members of a group contribute ideas spontaneously.