impenetrable

adjective

im·pen·e·tra·ble | \(ˌ)im-ˈpe-nə-trə-bəl

Definition of impenetrable

1a : incapable of being penetrated or pierced

b : inaccessible to knowledge, reason, or sympathy : impervious

2 : incapable of being comprehended : inscrutable

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Examples of impenetrable in a Sentence

The fort's defenses were thought to be impenetrable. the ancient temple was surrounded by vast stretches of impenetrable jungle

Recent Examples on the Web

The two sit in awkward silence, separated by their gaping age difference and by an impenetrable language barrier (the old man’s dialogue is even scribbled in Thai). — John Lithgow, New York Times, "Grandmas and Grandpas Are a Kid’s Natural Allies in These Books," 22 June 2018 Early in the episode, Bernard and Elsie have an impenetrable conversation about the Cradle and the Mesa—two key aspects of Westworld’s behind-the-scenes power structure, which are each vying for control in the wake of the revolution. — Scott Meslow, GQ, "Westworld Season 2 Episode 6 Recap: Off the Rails," 28 May 2018 Donald Trump's electoral coalition is smashing both American political parties and its previously impenetrable political news media. — Fox News, "'The Great Revolt' by Salena Zito and Brad Todd," 8 May 2018 But as drive-ins started to multiply in the suburbs — there were at least 37 in the Bay Area by the 1960s — San Francisco was an impenetrable market. — Peter Hartlaub, SFChronicle.com, "SF almost had a Sutro Drive-In in 1950, and more local outdoor movie history," 13 July 2018 Coal dust particles enter the lungs, irritating the delicate lung tissue and eventually forming massive impenetrable fibrous tissue that significantly restricts the lung's functions and causes scarring, which can lead to lung failure and death. — Beth Warren, The Courier-Journal, "Kentucky coal mine officials charged with cheating on key safety tests," 11 July 2018 Genuine, unanswered and impenetrable mysteries are rare in modern football: rare, in fact, in modern life. — SI.com, "Ronaldo's 1998 Seizure & World Cup Final Appearance Remains One of Football's Greatest Mysteries," 1 June 2018 Los Angeles Times Unable to surmount the near-impenetrable barriers of Southern California's freeway system, mountain lions and other wildlife are left to mate with their own offspring. — Shelby Grad, latimes.com, "Essential California: For a diverse LAPD, there's praise, criticism and pressure," 17 May 2018 The rulebooks of various sports are as dense, convoluted and impenetrable as your ordinary astrophysics textbook. — Chris Chase, For The Win, "13 incredibly bizarre rules in sports from dress codes to one-point safeties," 11 Apr. 2018

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