seriousobstacle
nounUK /ˈsɪəriəs ˈɒbstəkl/
US /ˈsɪriəs ˈɑːbstəkl/
A big problem that makes it hard to do something.
The broken bridge was a serious obstacle on our way to the park.
OTHER MEANINGS
2. A large thing that stands in your way and stops you from moving forward.
A fallen tree was a serious obstacle blocking the road.
3. A hard test of your courage or skill.
Climbing the tall wall was a serious obstacle for the young climber.
4. Something that makes a plan or goal much harder to reach.
Not having enough money was a serious obstacle to their trip.