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   Im·pen·e·tra·ble

   /imˈpenətrəb(ə)l/

   

   adjective

   • 1. impossible to pass through or enter: "a dark, impenetrable forest" Similar impassableunpassableinaccessibleunnavigableuntraversablepathlesstracklessuntroddendensethickovergrownjunglyjungle-likearchaic:thicksetOpposite accessiblesparse
   • ▪ (of matter) incapable of occupying the same space as other matter at the same time.
   • 2. impossible to understand: "her expression was impenetrable" Similar incomprehensibleimpossible to understandunfathomablefathomlessinexplicableunintelligibleunclearbafflingbewilderingpuzzlingperplexingconfusingabstruseobscureopaquereconditeinscrutablemysteriouscrypticDelphiccomplexcomplicateddifficulthardarchaic:wilderingrare:insolvableOpposite clear

   Word Origin late Middle English: via French from Latin impenetrabilis, from in- ‘not’ + penetrabilis ‘able to be pierced’, from the verb penetrare (see penetrate).

   Derivatives

   • 1. impenetrability noun
   • 2. impenetrably adverb
   • 3. impenetrableness noun

   Scrabble Points: 18

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