impede

Pollution also reduces grain yield by severely impeding photosynthesis.

Just recently, a march on the Ferguson police station ended with protestors quickly arrested for impeding traffic.

The issue is making sure every ballot cast is counted, not impeding the individual freedom to fill out a form.

In fact, the myth itself is potentially a greater danger—prone to impeding efforts when help is needed most.

There was no crowding or impeding haste in their dumb exodus.

I went on gayly with my pious guide and his hopeful companion, no sinister accident impeding our journey.

There was another element impeding his progress which he by no means ignored—that was the Blue Goose.

For the crowd had already begun to press behind, and, stretching nearly across the roadway, was impeding the traffic.

Merle, with his world-weary gesture, swept the impeding lock from his pale brow and set pained eyes upon his father by adoption.