lyingly

lying +‎ -ly

lyingly (comparative more lyingly, superlative most lyingly)

1. In a lying manner; deceptively, mendaciously.
   • Robert Southey

     And now is there a third derivative
     From Mr. Colburn's composite, which late
     The Arch-Pirate Galignani hath prefixed,
     A spurious portrait to a faithless life,
     And bearing lyingly the libelled name
     Of Lawrence, impudently there insculpt.

   • 2001, Christopher Hitchens, ‘Of Sin, the Left, and Islamic Fascism’, The Nation 24 September

     He didn't even save himself by lyingly claiming, as he several times did, that Osama bin Laden was hiding in Bosnia.