imperviously

== English == === Etymology === From impervious + -ly. === Adverb === imperviously (comparative more imperviously, superlative most imperviously) In an impervious manner; impenetrably; impermeably. === References === William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “imperviously”, in The Century Dictionary and Cyclopedia: […], New York, N.Y.: The Century Co., →OCLC.