The most common and most likely answer to this crossword clue is the 9 letter word DECORATED
I've seen this crossword clue in The Daily Telegraph
D
E
C
O
R
A
T
E
D
Buddy explains!

The straight part
We know that "Honoured" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case honoured = decorated.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 DECORATED mean?
DECORATED verb- To furnish with decorations.
- To improve the appearance of an interior of, as a house, room, or office.
- To decorate an interior space, as a house, room, or office.
- To honor by providing a medal, ribbon, or other adornment.
- To extend a method, etc. by attaching some further code item.
- Having had decorations applied; adorned with attractive items.