The most common and most likely answer to this crossword clue is the 7 letter word ALOOFLY
I've seen this crossword clue in The Daily Telegraph
A
L
O
O
F
L
Y
More clues leading to the result ALOOFLY
- So distant, a buzzer in private chamber?
- Leading character in 21 can do what it does remotely
- Head of Admiralty can navigate remotely
- Haughtily, ladies entering a horse-drawn carriage
- In haughty manner, is it an indication toilet needs cleaning?
- Asian potato pest with antisocial manner
- How a snob might react when an insect is seen around toilet
- A ninny flipped over disheartened lady with a cool manner
Buddy explains!

The straight part
We know that "In haughty manner" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in haughty manner = aloofly.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.