Noun
The state or quality of being deep, profound, mysterious, secretive, etc.; depth; profundity; -- opposed to shallowness.
Craft; insidiousness.
Source: Webster's dictionaryThere is a deepness in the sky, and it extends forever. Vernor Vinge
There is the melancholy of Europe. There is the romantic malaise. Feeling sad is almost a form of deepness. Mathieu Amalric
the depth of the water Source: Internet
depth of a shelf Source: Internet
depth of a closet Source: Internet
the profundity of the mine was almost a mile Source: Internet