The most common and most likely answer to this crossword clue is the 6 plus 4 letter word SCOTCH MIST
I've seen this crossword clue in The Guardian
S
C
O
T
C
H
M
I
S
T
More clues leading to the result SCOTCH MIST
- Repeatedly cold, this most unconventionally fine shower!
- Alcohol reporter's failed to notice in a haze
- An alcoholic daze?
- Spirit audience’s not picked up — it’s insubstantial
- Fine rain put paid to start of match – sit frustrated
- Alcoholic haze?
- Drizzle put a stop to Tim’s rambling
- Avoiding nothing, put paid to damp, fine rain
Buddy explains!
The straight part
We know that "it’s insubstantial /it’s insubstantial" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’s insubstantial /it’s insubstantial = scotch mist.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.