impenetrable

adjective
UK: /ɪmˈpen.ɪ.trə.bəl/
US: /ɪmˈpen.ə.trə.bəl/

  1. Impossible to pass through or enter.

    1. The forest was dark and impenetrable.
    2. The old castle had walls that seemed completely impenetrable to invaders.

  2. Impossible to understand.

    1. The poem was impenetrable.
    2. I found the professor's lecture completely impenetrable and confusing.

Synonyms

impassable unfathomable opaque incomprehensible
impenetrable noun

  1. Something that cannot be penetrated or understood.

    1. His mind was an impenetrable.
    2. The code remained an impenetrable to even the most skilled hackers.

Frequently Asked Questions

The word "impenetrable" in English means: Impossible to pass through or enter., Impossible to understand..

The phonetic transcription of "impenetrable" is /ɪmˈpen.ɪ.trə.bəl/ in British English and /ɪmˈpen.ə.trə.bəl/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "impenetrable": impassable, unfathomable, opaque, incomprehensible.

Example usage of "impenetrable": "The forest was dark and impenetrable.". More examples on the page.