The most common and most likely answer to this crossword clue is the 7 letter word GNOSTIC
G
N
O
S
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C
More clues leading to the result GNOSTIC
- Cigs not repackaged — that's shrewd
- Learned one tune that points up uncontrolled movement
- Heretical movement beyond control after number retired
- Knowing costing, upset
- Number up, correct mark erased in the end, according to facts known
- Sign to new Catholic claiming spiritual knowledge
- Learned one tune to counter uncontrolled movement
- Knowing Conservative, it’s e.g. Land of Hope and Glory which is uplifting
- Cognisantwith missing article
- Knowing number has come up, moment appearing endless
Buddy explains!

The straight part
We know that "Knowing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case knowing = gnostic.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 GNOSTIC mean?
GNOSTIC noun- A believer in Gnosticism
- Of, or relating to, intellectual or spiritual knowledge
- Of, or relating to Gnosticism
- Knowing; wise; shrewd