I₁M₃P₃E₁R₁V₄I₁O₁U₁S₁L₁Y₄

22 points

IMPERVIOUSLY is validvalid

in an impervious manner [adv]

169,488 of 196,601 in NWL2023·also valid in CSW24

IMPERVIOUS, not allowing entrance or passage, also IMPERVIABLE [adv]

117,492 of 280,887 in CSW24·also valid in NWL2023