impenetrate /im-penˈi-trāt/

1. To permeate
2. To penetrate thoroughly

impenetrāˈtion noun

• cat's-whisker
• cattabu
• cattabus
• cattalo
• cattaloes
• cattalos
• catted
• catted and fished
• catteries
• cattery
• cattier
• catties
• cattiest
• cattily
• cattiness
• cattinesses
• catting
• cattish
• cattishly
• cattishness
• cattishnesses
• cattle
• cattle cake
• cattle cakes
• cattle-class