The most common and most likely answer to this crossword clue is the 3 plus 3 plus 4 letter word OFF THE WALL
I've seen this crossword clue in The Daily Telegraph
O
F
F
T
H
E
W
A
L
L
More clues leading to the result OFF THE WALL
- Unorthodox climbers might fall thus
- . How Humpty Dumpty ended up mad?
- Unorthodox, like Humpty-Dumpty’s end?
- Peeling wallpaper is so unconventional
- How fell fat sort!?
- Wacky way to play squash?
- Unorthodox final position of Humpty Dumpty?
- Left field in bad condition after running a lot
- Unbalanced novice climbers might fall thus
- Legendary Egghead toppled thus? It’s unexpected
Buddy explains!
The straight part
We know that "Rather strange" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rather strange = off the wall.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 OFF THE WALL mean?
OFF THE WALL adjective- Wildly unconventional; bizarre; absurd.
- Of a person's behaviour: greatly inappropriate.