One entry found for impenetrable.

Main Entry: im·pen·e·tra·ble
Pronunciation: ()im-pen--tr-bl
Function: adjective
1 : impossible to get through or into <impenetrable walls> <impenetrable jungle>
2 : impossible to understand <an impenetrable mystery>
- im·pen·e·tra·bil·i·ty /()im-pen--tr-bil-t-/ noun
- im·pen·e·tra·bly /()im-pen--tr-bl/ adverb