The most common and most likely answer to this crossword clue is the 9 letter word GROTESQUE
I've seen this crossword clue in The Daily Telegraph
G
R
O
T
E
S
Q
U
E
Buddy explains!

The straight part
We know that "Outlandish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case outlandish = grotesque.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 GROTESQUE mean?
GROTESQUE noun- A style of ornamentation characterized by fanciful combinations of intertwined forms.
- Anything grotesque.
- A sans serif typeface.
- Distorted and unnatural in shape or size; abnormal and hideous.
- Disgusting or otherwise viscerally revolting.
- Sans serif.