The most common and most likely answer to this crossword clue is the 11 letter word STEREOTYPES
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result STEREOTYPES
Buddy explains!
The straight part
We know that "Hackneyed standards" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hackneyed standards = stereotypes.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 STEREOTYPES mean?
STEREOTYPES noun- A conventional, formulaic, and often oversimplified or exaggerated conception, opinion, or image of (a person).
- A person who is regarded as embodying or conforming to a set image or type.
- A metal printing plate cast from a matrix moulded from a raised printing surface.
- (UML) An extensibility mechanism of the Unified Modeling Language, allowing a new element to be derived from an existing one with added specializations.