Cryptic crossword clue
It’s wrong to show lack of respect to Her Majesty, an immoral habit

The most common and most likely answer to this crossword clue is the 10 letter word DISSERVICE

I've seen this crossword clue in Independent
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Buddy explains!

The straight part
We know that "It’s wrong" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’s wrong = disservice.
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 DISSERVICE mean?

DISSERVICE noun
  1. Service that results in harm; an (intentionally or unintentionally) unhelpful, harmful action.
DISSERVICE verb
  1. To disserve, to provide a disservice to; to provide harmful or inadequate service to.

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