It's wet, mildewed, corroded, rotten.

It says the mildewed Methodists, Episcopalians, and Baptists are against me.

His bald purplish head now looked for all the world like a mildewed skull.

Then the priest shall examine it, after the plague is washed and behold, if the plague hasn't changed its color, and the plague hasn't spread, it is unclean you shall burn it in the fire. It is a mildewed spot, whether the bareness is inside or outside.