Impenetrable Definition
impenetrable
adjective
- not admitting of penetration or passage into or through; "an impenetrable fortress"; "impenetrable rain forests"
- permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom"
- impossible to understand; "impenetrable jargon"
Words that rhyme with impenetrable
Usage tips for "impenetrable"
Understanding the precise definition of a word helps you use it with confidence. When using "impenetrable" in your writing, consider whether you need the word itself or one of its synonyms — subtle differences in meaning can change the tone of a sentence. If you're writing poetry or song lyrics, check the rhymes for impenetrable to find words that pair well.