The most common and most likely answer to this crossword clue is the 9 letter word ENAMOURED
I've seen this crossword clue in The Guardian
E
N
A
M
O
U
R
E
D
More clues leading to the result ENAMOURED
- Smitten female married our editor
- Besotted with slinky demeanour
- In love, shown by distracted demeanour
- In love with exotic demeanour
- Fascinated by unusual demeanour
- With hair receding, this paper’s boss is in love
- Fascinated by eccentric demeanour
- So in love, with demeanour transformed
- Besotted girl bewailed losing knight
- Charmed by armour in dire need? That’s not right
Buddy explains!

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 ENAMOURED mean?
ENAMOURED verb- (mostly in the passive, followed by "of" or "with") To cause to be in love.
- (mostly in the passive) To captivate.
- In love, amorous.