1. boneheaded - Adjective
2. boneheaded - Adjective Satellite
(used informally) stupid
Source: WordNetThe more I ponder some of the boneheaded decisions GOP candidates have made of late, I can't bring myself to believe that they are serious about capturing more than about 8 percent of the black vote. J. C. Watts
For the life of her, she couldn't understand how such an obstinate, boneheaded chauvinist could make her pulse race and her insides turn to jelly. Joanne Fluke
For such a genius, Joe Maddon has made some boneheaded mistakes in the World Series. Source: Internet
Fox ordered the pilot in 1999, but made the boneheaded mistake of not picking it up to series. Source: Internet
These guys have been hammering out goofy, boneheaded, nursery-rhyme-biting, pop-culture-poking rock since they emerged in 1981 as Green Jellö. Source: Internet