inefficaciously

== English == === Etymology === From inefficacious +‎ -ly. === Adverb === inefficaciously (comparative more inefficaciously, superlative most inefficaciously) Without efficacy or effect. === References === “inefficaciously”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.