The most common and most likely answer to this crossword clue is the 9 letter word CRITERION
I've seen this crossword clue in The Guardian
C
R
I
T
E
R
I
O
N
More clues leading to the result CRITERION
- Standard clubs with refurbished interior
- Standard review by key writer ultimately upset no one
- Canon‘s study includes liturgy and scripture
- Conran’s first interior design standard
- Cold interior to be renovated as standard
- Cold interior renovated as standard
- Model Conservative facing interior reshuffle
- Standard note covering disorderly interior
- Religious observance and instruction held in Conservative rule
- Model’s cold before interior shot
Buddy explains!
The straight part
We know that "Canon" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case canon = criterion.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 CRITERION mean?
CRITERION noun- A standard or test by which individual things or people may be compared and judged.