impenetrate /im-penˈi-trāt/

1. To permeate
2. To penetrate thoroughly

impenetrāˈtion noun

• forethinker
• forethinkers
• forethinking
• forethinks
• forethought
• forethoughtful
• forethoughts
• foretime
• foretimes
• foretoken
• foretokened
• foretokening
• foretokenings
• foretokens
• foretold
• foretooth
• foretop
• foretop-gallant-mast
• foretopmast
• foretopmasts
• foretops
• for ever
• forever
• for ever and aye
• for evermore