Holdup

SNAG

A minor obstacle that might slow you down unexpectedly.

"Holdup" can mean a delay or obstruction, which directly hints at "snag," a word often used to describe an unexpected problem or hindrance. The clue plays on the idea of something causing a pause or interruption, and "snag" fits perfectly as a casual term for that kind of issue. There’s no hidden wordplay here—it’s a straightforward definition leading to the answer.