1. impenetrable - Noun
2. impenetrable - Adjective
3. impenetrable - Adjective Satellite
Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
Having the property of preventing any other substance from occupying the same space at the same time.
Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart.
Source: Webster's dictionaryHowever impenetrable it seems, if you don't try it, then you can never do it. Andrew Wiles
You look at a star for two reasons, because it is luminous, and because it is impenetrable. You have beside you a sweeter radiance and a greater mystery, woman. Victor Hugo
Bereavement is a darkness impenetrable to the imagination of the unbereaved. Iris Murdoch
Almighty Framer of the Skies! O let our pure devotion rise, Like Incense in thy Sight! Wrapt in impenetrable Shade, The Texture of our Souls were made, Till thy Command gave Light. Thomas Chatterton
Of all the mysteries of the stock exchange there is none so impenetrable as why there should be a buyer for everyone who seeks to sell. John Kenneth Galbraith
His whole life was now summed up in two words: absolute uncertainty within an impenetrable fog. Victor Hugo