The most common and most likely answer to this crossword clue is the 11 letter word LOVEY-DOVEY
I've seen this crossword clue in Financial Times
L
O
V
E
Y
-
D
O
V
E
Y
More clues leading to the result LOVEY-DOVEY
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 LOVEY-DOVEY mean?
LOVEY-DOVEY adjective- Affectionate in a rather mushy or oversentimental fashion