pervious

Etymology

Borrowed from Latin pervius (“having a passage through; passable, penetrable, traversable”), to which English -ous (suffix denoting the presence of a quality in any degree, typically an abundance) was added. Pervius itself derives from per- (prefix denoting doing something all the way through or entirely) plus via (“road, street; method, way; (figurative) course, route”) plus -us (suffix forming adjectives).