The most common and most likely answer to this crossword clue is the 8 letter word NEBULOUS
I've seen this crossword clue in The Guardian
N
E
B
U
L
O
U
S
More clues leading to the result NEBULOUS
- Vague upper-class fellow gets thrown over, poor soul
- Vague sense to gather up American lubricant
- Cloudy and no blue about? You close to Inverness?
- Shapeless half-nude with blouse undone
- Vague posh character twice interrupting nobles, excitedly
- Hazy blue liquid no American has consumed
- Crash of lone bus involving middle of bus? It’s unclear
- Source of olive oil in America bathed in heat from the south? That’s unclear
Buddy explains!
The straight part
We know that "Vague" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vague = nebulous.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 NEBULOUS mean?
NEBULOUS adjective- In the form of a cloud or haze; hazy.
- Vague or ill-defined.
- Relating to a nebula or nebulae.