impenetrabil Adjective, impenetrabil

1. impenetrable

Appox. usage (any sense): 2.08 per million words

nestrăbătut Adjective, nestrăbătut

1. not traveled, impenetrable

Appox. usage (any sense): 0.015 per million words

impenetrant Adjective, impenetrant

1. impenetrable

Appox. usage (any sense): less than 0.1 per million words