Antonyms of adj impermeable

1 sense of impermeable

Sense 1
impermeable (vs. permeable) -- (preventing especially liquids to pass or diffuse through; "impermeable stone"; "an impermeable layer of scum"; "a coat impermeable to rain")

permeable (vs. impermeable) -- (allowing fluids or gases to pass or diffuse through; "permeable membranes"; "rock that is permeable by water")
        => porous -- (able to absorb fluids; "the partly porous walls of our digestive system"; "compacting the soil to make it less porous")
        => semipermeable -- ((of a membrane) selectively permeable)

Similarity of adj impermeable

1 sense of impermeable

Sense 1
impermeable (vs. permeable) -- (preventing especially liquids to pass or diffuse through; "impermeable stone"; "an impermeable layer of scum"; "a coat impermeable to rain")
       => retentive -- (having the power, capacity, or quality of retaining water; "soils retentive of moisture")
       => water-repellent, water-resistant -- (hindering the penetration of water; "a water-repellent coat")
          Also See-> impervious#1, imperviable#1; tight#7