The most common and most likely answer to this crossword clue is the 7 letter word SETBACK
I've seen this crossword clue in The Daily Telegraph
S
E
T
B
A
C
K
More clues leading to the result SETBACK
- Place somewhat behind in disappointment
- Determined defender’s reversal of progress
- What hinders determined rugby player
- Problem getting old Times supplement?
- Misfortune that TV repairman may bring?
- Check to determine support
- Snag that actors can see behind the scenes?
- Disappointment with TV returned
- Problem group given support
- Reverse part of defence after some action in court
Buddy explains!

The straight part
We know that "Snag" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case snag = setback.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 SETBACK mean?
SETBACK noun- An obstacle, delay, disadvantage, blow (an adverse event which retards or prevents progress towards a desired outcome)
- The required distance between a structure and a road.
- A step-like recession in a wall.
- An offset to the temperature setting of a thermostat to cover a period when more or less heating is required than usual.
- (possibly obsolete) A backset; a countercurrent; an eddy.
- A backset; a check; a repulse; a relapse.