FAQs About the word imperviousness

Impermeability

the quality of being impenetrable (by people or light or missiles etc.)

Impenetrable,waterproof,thick,tight,close,compact,dense,Waterproof,Airtight,hermetic

Permeable,pervious,porous,absorbent,leaky,Penetrable,unsealed

impervious => impervious, imperviable => impervious, imperviability => impermeability, imperturbed => unperturbed, imperturbation => Calmness,