Adjective: pigheaded pig'he-did
Usage: informal
- Obstinate and stupid
"The pigheaded child refused to obey his mother";
- bullheaded, bullet-headed
Usage: informal
- In a stubborn, unregenerate manner
"she remained pig-headedly in the same position";
- stubbornly, obdurately, mulishly, obstinately, cussedly [informal], bloody-mindedly [Brit], intransigently
See also: obstinate, stubborn, unregenerate