Noun

• S: (n) depth, deepness (the extent downward or backward or inward) "the depth of the water"; "depth of a shelf"; "depth of a closet"
• S: (n) depth (degree of psychological or intellectual profundity)
• S: (n) depth ((usually plural) a low moral state) "he had sunk to the depths of addiction"
• S: (n) astuteness, profundity, profoundness, depth, deepness (the intellectual ability to penetrate deeply into ideas)
• S: (n) depth (the attribute or quality of being deep, strong, or intense) "the depth of his breathing"; "the depth of his sighs"; "the depth of his emotion"