impenetrable
im·pen·e·tra·ble
adj \(ˌ)im-ˈpe-nə-trə-bəl\Definition of IMPENETRABLE
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
Examples of IMPENETRABLE
- The fort's defenses were thought to be impenetrable.
- <the ancient temple was surrounded by vast stretches of impenetrable jungle>
Origin of IMPENETRABLE
Middle English impenetrabel, from Middle French impenetrable, from Latin impenetrabilis, from in- + penetrabilis penetrable
First Known Use: 15th century
Related to IMPENETRABLE
Related Words: close, compact, dense, thick, tight; compressed, condensed; sturdy, substantial, tough; firm, frozen, hard, solid, stiff; inflexible, rigid, unbending, unyielding
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