impenetrate /im-penˈi-trāt/

1. To permeate
2. To penetrate thoroughly

impenetrāˈtion noun

• flatulences
• flatulencies
• flatulency
• flatulent
• flatulently
• flatuous
• flatus
• flatuses
• flatware
• flatwares
• flatways
• flat white
• flat whites
• flatwise
• flatworm
• flatworms
• flat-woven
• flaught
• flaughted
• flaughter
• flaughtered
• flaughtering
• flaughters
• flaughter-spade
• flaughting