impenetrate /im-penˈi-trāt/

1. To permeate
2. To penetrate thoroughly

impenetrāˈtion noun

• upstand
• upstanding
• upstands
• upstare
• upstared
• upstares
• upstaring
• upstart
• upstarted
• upstarting
• upstarts
• upstate
• upstay
• upstayed
• upstaying
• upstays
• up sticks
• viewphone
• viewphones
• viewpoint
• viewpoints
• views
• viewy
• vifda
• vig