The most common and most likely answer to this crossword clue is the 6 letter word BLURRY
I've seen this crossword clue in The Daily Telegraph
B
L
U
R
R
Y
More clues leading to the result BLURRY
Buddy explains!

The straight part
We know that "Obscure" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case obscure = blurry.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 BLURRY mean?
BLURRY adjective- (of an image) Not clear, crisp, or focused; having fuzzy edges.
- Not clear; lacking well-defined boundaries.