Words similar to obstacle

Example sentences for: obstacle

How can you use “obstacle” in a sentence? Here are some example sentences to help you improve your vocabulary:

One obstacle is the body's natural defense: The immune system recognizes the virus as a threat and attacks it.
Parisian sidewalks are obstacle courses of dog shit.
It is the president of the Bosnian Muslims, Alia Izetbegovic, who turns out to be the biggest obstacle to peace, unwilling to make even meaningless concessions.
In fact, close to the site of injury where its geometry is disrupted, myelin may indeed be an obstacle to regeneration (see Pettigrew et al.
Another obstacle is the book's vaguely newsmaggy format, which requires Frum to move quickly from example to example and to abbreviate his arguments.