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Webster 1913 Edition

Unpenetrable

Un-pen′e-tra-ble

,

Adj.

Impenetrable.

Webster 1828 Edition

Unpenetrable

UNPEN'ETRABLE

,

Adj.

Not to be penetrated. [But impenetrable is chiefly used.]

Definition 2024

unpenetrable

unpenetrable

English

Adjective

unpenetrable ‎(comparative more unpenetrable, superlative most unpenetrable)

impenetrable