thickheadedly
advEtymology From thickheaded + -ly.
1
In a thickheaded manner
- Here he plays LA cop Frank Drebin, thickheadedly matching his wits against wealthy villain Vincent Ludwig (Ricardo Montalban)--who, for reasons that remain obscure to me, is plotting the assassination of Queen Elizabeth II (played by look-alike Jeannette Charles) at a California Angels baseball game.1988 December 9, Jonathan Rosenbaum, “Anything for a Laugh”, in Chicago Reader, archived from the original on 06 Mar 2016: