impeder
/ɪmˈpiːdər/
noun
- A person or thing that slows down or blocks progress or movement.
- The coach told the team not to let any impeder, like bad weather or injuries, stop them from winning.
- The fallen tree was an impeder on the hiking trail, forcing everyone to climb over it.
- In the project, the lack of funding acted as an impeder to completing the new library on time.