The most common and most likely answer to this crossword clue is the 9 letter word UNADORNED
U
N
A
D
O
R
N
E
D
More clues leading to the result UNADORNED
- Abroad, one loved touring northern plain
- Blue Berets loved defending northern plain
- Peacekeepers loved patrolling northern plain
- No unread novel grabs daughter, that’s plain
- Plain rude to mess around with a northern don
- A round end is round, plain and simple
- Dressed — or nude and natural
- Plain girl getting embarrassed over bit of naughtiness after party
- Northern dude and Nora Batty, naked
- Plain rude — and no different
Buddy explains!

The straight part
We know that "plain" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case plain = unadorned.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 UNADORNED mean?
UNADORNED verb- To add a feature or embellishment that makes something uglier; uglify.
- To remove the adornments from.
- Having no additional decoration or embellishment; plain and simple