impenetrableadjective
uk/ɪmˈpen.ɪ.trə.bəl/us/ɪmˈpen.ə.trə.bəl/impossible to see through or go through:
Outside, the fog was thick and impenetrable.
an impenetrable barrier
impossible to understand:
Some of the lyrics on their latest album are completely impenetrable.
Thesaurus: synonyms and related words
Transparent
- clear
- crystal
- crystal clear idiom
- crystalline
- densely
- diaphanous
- filmy
- limpid
- opacity
- opaque
- see-through
- thin
- thinly
- translucent
- transparency
- transparent
You can also find related words, phrases, and synonyms in the topics:
Unavailable and inaccessible
Difficult to understand
impenetrably
adverb uk/ɪmˈpen.ɪ.trə.bli/us/ɪmˈpen.ə.trə.bli/