depth

(noun) the extent downward or backward or inward. Synonyms: deepness. Examples: "The depth of the water." "Depth of a shelf." "Depth of a closet."

(noun) degree of psychological or intellectual profundity.

(noun) (usually plural) the deepest and most remote part. Examples: "From the depths of darkest africa." "Signals received from the depths of space."

(noun) (usually plural) a low moral state. Example: "He had sunk to the depths of addiction."

(noun) the intellectual ability to penetrate deeply into ideas. Synonyms: astuteness, profundity, profoundness, deepness.

(noun) the attribute or quality of being deep, strong, or intense. Examples: "The depth of his breathing." "The depth of his sighs," "the depth of his emotion."