Impenetrable (Adjective)
Meaning 1
Not admitting of penetration or passage into or through; "an impenetrable fortress"; "impenetrable rain forests".
Classification
All adjective clusters.
Antonyms
Related Words
Meaning 2
Permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom".
Classification
All adjective clusters.
Synonyms
Meaning 3
Impossible to understand; "impenetrable jargon".
Classification
All adjective clusters.