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Synonyms

impenetrability

American  
[im-pen-i-truh-bil-i-tee, im-pen-] / ɪmˌpɛn ɪ trəˈbɪl ɪ ti, ˌɪm pɛn- /

noun

  1. the state or quality of being impenetrable.

  2. Physics. that property of matter by virtue of which two bodies cannot occupy the same space simultaneously.


Etymology

Origin of impenetrability

First recorded in 1655–65; impenetr(able) + -ability

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.

Stewart spent most of her life building a façade of impenetrability and invulnerability, controlling and crafting an image of calm, assured expertise.

From Salon • Oct. 30, 2024

The picture’s core flaw remains Phoenix’s Napoleonic impenetrability.

From Seattle Times • Nov. 22, 2023

Within hours, its impenetrability was exposed as flawed.

From BBC • Oct. 8, 2023

One begins to think in terms of doors, hatches, coffers and windows, and yet there is often a sense of impenetrability, as if the walls suggest the possibility of passage yet limit egress.

From Washington Post • May 27, 2022

It had an ominous feel to it, a feel of impenetrability.

From "Messenger" by Lois Lowry