Avoiding and Impeding

verb

• Be a hindrance or obstacle to.
  • usage: "She is impeding the progress of our project"
  • synonyms: impede, hinder
• Block passage through.
  • usage: "obstruct the path"
  • synonyms: obstruct, obturate, impede, occlude, jam, block, close up

adjective

• Preventing movement.
  • usage: "the clogging crowds of revelers overflowing into the street"
  • synonyms: clogging, hindering, obstructive