impenetrable | English to English Dictionary

English to English

impenetrable

(/I/m'p/E/n/I/tr/@/b/@/l )

not admitting of penetration or passage into or through(adj.all)

Example:
An impenetrable fortress.
Impenetrable rain forests.

Antonym:
penetrable

source: wordnet30
Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.(adjective)

source: webster1913

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