The most common and most likely answer to this crossword clue is the 9 letter word AWARENESS
I've seen this crossword clue in The Guardian
A
W
A
R
E
N
E
S
S
More clues leading to the result AWARENESS
- Grasp a fighting European by the head
- Informed state of Royal Engineers in Swansea on manoeuvres
- Knowledge makes sense somehow after a conflict
- Descartes is shortly to plug a tool for raising understanding
- Grasp head following struggle in hospital department
- Various news areas provide knowledge
- Sense a battle with European head
- A peculiar raw sense in knowing what’s going on
- Wonder about revolutionary artist having head for knowledge
- In a strange sense, conflict produces enlightenment
Buddy explains!
The straight part
We know that "knowledge" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case knowledge = awareness.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 AWARENESS mean?
AWARENESS noun- The state or level of consciousness where sense data can be confirmed by an observer.
- The state or quality of being aware of something