penetrable

capable of being passed into or through unfortunately, our netting proved to be a rather penetrable barrier that allowed in our cabin a steady stream of mosquitoes Synonyms passable, permeable, pervious, porous Related Words absorbent; breathable Near Antonyms airtight, watertight; close, compact, dense, thick Antonyms impassable (also impassible), impenetrable, impermeable, impervious, nonporous