The most common and most likely answer to this crossword clue is the 9 letter word STANDARDS
S
T
A
N
D
A
R
D
S
More clues leading to the result STANDARDS
- Flags code of behaviour
- Flags put up next to A roads
- Dad’s rants breaking protocol
- Criteria which could be raised on ships?
- . Dad’s rants about principles
- Sand art made by extremely dexterous models
- These days, it’s cool to pull back after being in partnership with primarily shallow principles
- Stan's daughter made ads with radical principles
- Sad, sad strands of Gershwin tunes, for instance
- Applied unfairly, they could be double
Buddy explains!

The straight part
We know that "principles" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case principles = standards.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 STANDARDS mean?
STANDARDS noun- A principle or example or measure used for comparison.
- A vertical pole with something at its apex.
- A manual transmission vehicle.
- The upper petal or banner of a papilionaceous corolla.
- An inverted knee timber placed upon the deck instead of beneath it, with its vertical branch turned upward from that which lies horizontally.
- A large drinking cup.
- Standard idiom, a prestigious or standardized language variety; standard language
- Pertaining to standards, concerned with standards, specific to standards.