More seepy than something else.
This word is used to compare how much something seeps compared to something else.
Examples:
The sponge is seepier than the rock.
This cloth is seepier than that one.
The seepier ground is over there.
The seepier the better, I always say.
The seepier the sponge, the better it is for cleaning.
The seepier the ground, the more plants can drink.