transcription, транскрипция: [ (ˌ)im-ˈpe-nə-trə-bəl ]
adjective
Etymology: Middle English impenetrabel, from Middle French impenetrable, from Latin impenetrabilis, from in- + penetrabilis penetrable
Date: 15th century
1.
a. : incapable of being penetrated or pierced
b. : inaccessible to knowledge, reason, or sympathy : impervious
2. : incapable of being comprehended : inscrutable
• im·pen·e·tra·bly -blē adverb