The most common and most likely answer to this crossword clue is the 8 letter word PROUDEST
I've seen this crossword clue in The Times
P
R
O
U
D
E
S
T
Buddy explains!
The straight part
We know that "Most haughty" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case most haughty = proudest.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 PROUDEST mean?
PROUDEST adjective- Feeling honoured (by something); feeling happy or satisfied about an event or fact; gratified.
- Possessed of a due sense of what one deserves or is worth.
- Having too high an opinion of oneself; arrogant, supercilious.
- Generating a sense of pride; being a cause for pride.
- (Of things) standing upwards as in the manner of a proud person; stately or majestic.
- Standing out or raised; swollen.
- Brave, valiant; gallant.
- Excited by sexual desire; specifically of a female animal: in heat.