flabbergastingly

== English == === Etymology === From flabbergasting +‎ -ly. === Adverb === flabbergastingly (comparative more flabbergastingly, superlative most flabbergastingly) Surprisingly, astonishingly or amazingly 1922, George Jean Nathan, Henry Louis Mencken. The smart set: a magazine of cleverness, Volume 69. Ess Ess Pub. Co. page 49. (There) must be sympathy in the back parlor if it is to get its message across, and that this flabbergastingly important message... is as follows:...