s, o, e, n, p, m, r, i, u, v are letters that make 'imperviousness'
ER, RV, perviousness, pe, MP, IOU, USN, SS, pervious, impervious, vi, VI, US, NE, ness, Io, imp, Es, Er, Ne, Sn are words within 'imperviousness'
1 possible definitions for 'imperviousness'
Under this definition, imperviousness is a noun and has the following properties:
impenetrability has the same meaning as imperviousness
penetrability, perviousness have the opposite meaning of 'imperviousness'
'imperviousness' can be a type of quality.
impenetrable, impervious, imperviable are derivatives of 'imperviousness'.