impenetrable
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The primary difference between public and private prisons, experts told Salon, is that private prisons operate in an even more impenetrable black box than public prisons.
From Salon
The idea is that they could overwhelm enemies or erect impenetrable defenses against threats with minimal human input.
A poorly cleared corner followed by an unfortunate deflection proved fatal to the hitherto impenetrable Parisian defence.
From Barron's
Though generally handsome and admirably executed, they often remain impenetrable, enigmatic objects—carriers saddled with ideas—rather than autonomous, living sculptures in which form and content inextricably fuse.
There were dozens of workshops with titles impenetrable to people without Ph.D.s.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
