The most common and most likely answer to this crossword clue is the 9 letter word SNOOKERED
I've seen this crossword clue in The Daily Telegraph
S
N
O
O
K
E
R
E
D
More clues leading to the result SNOOKERED
- Obstructed southern hideout used by European communist
- Look almost embarrassed admitting retreat’s blocked
- Thwarted Derek turning up, having cropped scarf on top
- Frustrated with knitted top before wearing neck-warmer
- Derek’s repelled and thwarted
- Thwarted by awful crookedness not going to extremes
- Duped by game of journalist
- Blocked by colour after swerve ends round hole
- Day before American artist’s retrospective, it’s blocked
Buddy explains!

The straight part
We know that "Obstructed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case obstructed = snookered.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 SNOOKERED mean?
SNOOKERED verb- To play the game of snooker.
- To fool or bamboozle.
- To place the cue ball in such a position that (the opponent) cannot directly hit the required ball with it.
- (by extension) To put (someone) in a difficult situation.
- To become or cause to become inebriated.
- In a situation where the cue ball position is such that one cannot directly hit the required object ball.
- In a difficult situation, especially because of the actions of others.
- Drunk.