0 in a way that is impossible to see through or go through:
He wore impenetrably dark wraparound sunglasses.
The overgrown orchard was almost impenetrably jungle-like.
He writes impenetrably technical stories on nuclear topics.
He found the company accounts were in good order and not impenetrably complex.
The drink he poured was a stout - an impenetrably black liquid.
The fog was impenetrably dense.
Their opinion is that the country is led by impenetrably smug upstarts who have little experience or wisdom.
NIEUWE WOORDEN
European
May 10, 2021
WOORD VAN DE DAG
Shimmer
impenetrably