IMPERVIABLEimperviable · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:IMPERVIABLETier 1Ordinal112Pythagorean58Classical106Reverse185Reverse Reduction68Standard378Final Large378Ordinal90Reduced27Atbash499Isopsephy285Ordinal96Abjad377