absorbefacient (similar term)
sorbefacient (similar term)
assimilating (similar term)
assimilative (similar term)
assimilatory (similar term)
hygroscopic (similar term)
receptive (similar term)
shock-absorbent (similar term)
spongy (similar term)
spongelike (similar term)
thirsty (similar term)
nonabsorbent (antonym)