1. In an impregnable manner
   "the sight of that bland, impregnably righteous face has been enough to make their blood run cold"

See also: impregnable

• Prociphilus
• Prociphilus tessellatus
• proclaim
• proclaimed
• proclamation
• proclitic
• proclivity
• Procnias
• proconsul
• proconsular
• proconsulate
• proconsulship
• proconvertin
• procrastinate
• procrastination
• procrastinator
• procreant
• procreate
• procreation
• procreative
• procreator
• Procrustean
• procrustean bed
• procrustean rule
• procrustean standard