impenetrate /im-penˈi-trāt/

1. To permeate
2. To penetrate thoroughly

impenetrāˈtion noun

• in cash
• incasing
• incatenation
• incatenations
• incaution
• incautions
• incautious
• incautiously
• incautiousness
• incautiousnesses
• incave
• incaved
• incaves
• incavi
• incaving
• incavo
• incede
• inceded
• incedes
• inceding
• incedingly
• incendiaries
• incendiarism
• incendiarisms
• incendiary