1. In a grave and sober manner
   - gravely, soberly

See also: staid

• projection
• projection screen
• projectionist
• projective device
• projective geometry
• projective technique
• projective test
• projector
• prokaryote
• prokaryotic
• Prokayotae
• Prokhorov
• Prokofiev
• prolactin
• prolamine
• prolapse
• prolapsus
• prolate
• prolate cycloid
• prole
• proleg
• prolegomenon
• prolepsis
• proletarian
• proletariat