Main entry: deepness, profoundness, profundity
Definition: the quality of being physically deep
Usage: the profundity of the mine was almost a mile
Antonyms: shallowness
Definition: the quality of lacking physical depth
Main entry: profoundness, profundity
Definition: intellectual depth; penetrating knowledge; keen insight; etc
Usage: the depth of my feeling; the profoundness of the silence
Antonyms: superficiality, shallowness
Definition: lack of depth of knowledge or thought or feeling