\Filth"i*ness\, n. 1. The state of being filthy. Let us cleanse ourselves from all filthiness of the flesh and spirit. --2 Cor. vii. 1. 2. That which is filthy, or makes filthy; foulness; nastiness; corruption; pollution; impurity. Carry forth the filthiness out of the holy place. --2 Chron. xxix. 5.