WordWeb Online

1. The extent downward, backward or inward
   "depth of a shelf"; "the depth of the water";
   - deepness
    
2. Degree of psychological or intellectual profundity
    
3. (usually plural) a low moral state
   "he had sunk to the depths of addiction"
    
4. The intellectual ability to penetrate deeply into ideas
   - astuteness, profundity, profoundness, deepness
    
5. 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"

Derived forms: depths

See also: deep, shallow

Type of: abasement, abjection, attribute, degradation, degree, extent, grade, level, sapience, wisdom

Encyclopedia: Depth