impenetrable

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

Definition of impenetrable

  1. 1a :  incapable of being penetrated or piercedb :  inaccessible to knowledge, reason, or sympathy :  impervious

  2. 2 :  incapable of being comprehended :  inscrutable

impenetrably

play \(ˌ)im-ˈpe-nə-trə-blē\ adverb

Examples of impenetrable in a Sentence

  1. The fort's defenses were thought to be impenetrable.

  2. the ancient temple was surrounded by vast stretches of impenetrable jungle

Origin and Etymology of impenetrable

Middle English impenetrabel, from Middle French impenetrable, from Latin impenetrabilis, from in- + penetrabilis penetrable


First Known Use: 15th century


IMPENETRABLE Defined for English Language Learners

impenetrable

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

Definition of impenetrable for English Language Learners

  • : impossible to pass or see through

  • : impossible to understand


IMPENETRABLE Defined for Kids

impenetrable

play
adjective im·pen·e·tra·ble \im-ˈpe-nə-trə-bəl\

Definition of impenetrable for Students

  1. 1 :  impossible to pass through or see through impenetrable walls impenetrable darkness

  2. 2 :  impossible to understand an impenetrable mystery



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