Adah \a-dah\ as a girl's name is of Hebrew origin, and the meaning of Adah is "adornment". Biblical name: name of the wives of Lamech and Esau. Brought into prominence by American actress Adah Isaacs Mencken. See also Ada.
Baby names that sound like Adah are Aidah and Adiah. Other similar baby names are Adan, Adal, Adrah, Alah, Ardah and Avah.