This is the 15189th most frequent German word.
tiefliegende
Deep-set or low-lying.
The word 'tiefliegenden' is used as an adjective describing 'Wolken', indicating their specific position or nature, i.e., they are located low in the sky.
Die tiefliegenden Wolken kündigen Regen an.
The low-lying clouds predict rain.
Here, 'tiefliegenden' serves as an adjective that modifies 'Augen', referring to their distinct physical characteristic of being set deeper in the skull.
Seine tiefliegenden Augen verliehen ihm ein geheimnisvolles Aussehen.
His deep-set eyes gave him a mysterious appearance.
In this instance, 'tiefliegenden' is used metaphorically to describe 'Sorgen', suggesting that the concerns are profound or deeply held.