Prevented passage refers to the act of hindering, obstructing or stopping something from moving forward or advancing. On the contrary, the antonyms for prevented passage include opening, access, entry, clearance, approval, and sanction. These words imply the idea of allowing something to pass or go through freely, without any hindrance or obstacles. For instance, opening up a blocked road, giving access to a building or facility, granting clearance for a project, approving a proposal or granting sanction for an event being held. Antonyms for prevented passage suggest an action that removes an obstacle and creates an avenue for progress, development, and success.