impeding

(verb) be a hindrance or obstacle to. Synonyms: impede, hinder. Example: "She is impeding the progress of our project."

(verb) block passage through. Synonyms: obstruct, obturate, impede, occlude, jam, block, close up. Example: "Obstruct the path."

(adj) preventing movement. Synonyms: clogging, hindering, obstructive. Example: "The clogging crowds of revelers overflowing into the street."