The most common and most likely answer to this crossword clue is the 8 letter word LIONISES
I've seen this crossword clue in The Daily Telegraph
L
I
O
N
I
S
E
S
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 LIONISES mean?
LIONISES verb- To treat (a person) as if they were important, or a celebrity.
- To visit famous places in order to revere them.
- To behave as a lion.