depth in WordNet English dictionary

1. the intellectual ability to penetrate deeply into ideas
   astuteness  profundity  profoundness  depth  deepness 
   
2. the extent downward or backward or inward
   "the depth of the water"; "depth of a shelf"; "depth of a closet"
   depth  deepness 
   
3. degree of psychological or intellectual profundity
   depth 
   
4. 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"
   depth 
   
5. (usually plural) the deepest and most remote part
   "from the depths of darkest Africa"; "signals received from the depths of space"
   depth 
   
6. (usually plural) a low moral state
   "he had sunk to the depths of addiction"
   depth