Impossible to physically puncture or rupture
“Her skin glistened in an impenetrable diamond layer, the creation of Gaia's geology and biology.”
Impossible to pass through or enter
“But the circle of outraged nobles had made an almost impenetrable wall surrounding the king and the prince.”
Preventing the passage of fluids, gasses, or other organic matter
“Several drops can create an impenetrable seal around a shaft while still minimizing friction.”
Having a very hard, solid or dense surface or structure
“The house on Corso Magenta was gated and grilled, the walls several meters thick, the roof a solid and impenetrable structure of slate.”
Made up of trees or vegetation packed closely or densely together
“On three sides spreads for miles an open country, but on the fourth is an impenetrable forest, through which Mr. Stanley and his followers in vain endeavored to force their way.”
Invulnerable, impossible to attack
“By following in Crusoe's footsteps, nineteenth-century boys believed the challenges of claiming their plot of land and transforming it into an impenetrable fortress would manifest their inherent talents and heroic qualities.”
Having restricted access (to a particular person or group)
“Opponents of the Junto regularly accused these peers of acting as an impenetrable clique.”
Unintelligible and not able to be understood
“But as a technology columnist, I'm in the business of coming up with confusing and impenetrable reactions to events around me.”
Detailed and complicated in design and planning, involving many carefully arranged elements
Visually cloudy, difficult or impossible to see through
Able to withstand
Shielded or protected from attack or damage
Dark and gloomy, especially due to thick mist
Having no sympathy, feeling, or compassion
Not clearly visible or attracting attention
(lost to) Hardened beyond sensibility or recovery
Not explainable by physical laws
Incapable of being separated or divided
Related Words and Phrases
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