numskull or numbskull /numˈskul/ (informal)

A blockhead

numˈskulled adjective

• pyrotechnical
• pyrotechnically
• pyrotechnician
• pyrotechnicians
• pyrotechnics
• pyrotechnies
• pyrotechnist
• pyrotechnists
• pyrotechny
• pyroxene
• pyroxenes
• pyroxenic
• pyroxenite
• pyroxenites
• pyroxyle
• pyroxyles
• pyroxylic
• pyroxylin
• pyroxyline
• pyroxylines
• pyroxylins
• pyrrhic
• Pyrrhic
• pyrrhicist
• pyrrhicists