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 E[li] Smith, editors (1911), “imperviously”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.