Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
2. vădo, āre, v. a. [vadum], to wade through, ford: flumina, quae sine pontibus vadari nequeunt, Veg. Mil. 2, 25: quia neque navium copia pro tempore erat, neque vadari fluvius poterat, Sulp. Sev. Chron. 1, 22, 3.