Main entry: poriferous, porous
Definition: full of pores or vessels or holes
Antonyms: nonporous
Definition: not porous; especially not having vessels that appear as pores
Main entry: holey, porous
Definition: allowing passage in and out
Usage: our unfenced and largely unpoliced border inevitably has been very porous
Antonyms: tight
Definition: of such close construction as to be impermeable
Main entry: porous
Definition: able to absorb fluids
Usage: the partly porous walls of our digestive system; compacting the soil to make it less porous
Antonyms: impermeable
Definition: preventing especially liquids to pass or diffuse through