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