1. In an honourable manner
   - honorably [US], honourably [Brit, Cdn] 
2. In an upright position

See also: upright

• proton accelerator
• proton magnetic resonance
• protonotary
• protoplasm
• protoplasmic
• protoplasmic astrocyte
• protoplast
• protostar
• Prototheria
• prototherian
• prototypal
• prototype
• prototypic
• prototypical
• Protozoa
• protozoal
• protozoal infection
• protozoan
• protozoic
• protozoological
• protozoologist
• protozoology
• protozoon
• protract
• protracted