Synonym: astuteness, deepness, profoundness, profundity. Similar words: adept, inept, percept, accept, except, septic, keep to, deplete. Meaning: [depθ] 
n. 1. extent downward or backward or inward 2. degree of psychological or intellectual profundity 3. (usually plural) the deepest and most remote part 4. (usually plural) a low moral state 5. the intellectual ability to penetrate deeply into ideas.
n. 1. extent downward or backward or inward 2. degree of psychological or intellectual profundity 3. (usually plural) the deepest and most remote part 4. (usually plural) a low moral state 5. the intellectual ability to penetrate deeply into ideas. 
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31 I was amazed at the depth of her knowledge.
32 The depth of the shelves is 30 centimetres.
33 The depth of the shelves is about 35 cm.
34 Her writing shows astonishing depth.
35 He specializes in flashy technique, without much depth.
36 Her writings have extraordinary depth and solidity.
37 People need to realize the depth of the problem.
38 Network news coverage often lacks depth.
39 We will discuss these three areas in depth.
40 The company was started in the depth of the recession of the 1930s.
41 The clam burrows in the sand to a considerable depth.
42 These new statistics confirm our worst fears about the depth of the recession.
43 Most old overseas Chinese keep in the depth of their souls a longing for their motherland.
44 The river froze to a depth of over a metre.
45 This is a new subject and needs to be explored in depth.
46 These fish are found at a depth of over 100 metres.
47 If you can't swim,(sentencedict.com) don't get out of your depth.
48 His ideas lack depth.
49 The conference stimulated him to study the subject in more depth.
50 It does not take much imagination to understand the depth of their grief.
51 We felt at home with her and were impressed with the depth of her knowledge.
52 I am well aware of the depth of feeling that exists in Londonderry.
53 I'd like to look at this question in some depth.
54 I'm not a strong swimmer so I prefer not to go out of my depth.
55 His music lacks depth.
56 The underlying reasons for these differences will be explored in depth in the next chapter.
57 Derek is out of his depth with the new computer.
58 The film has a surprising depth of emotion for a comedy.
59 Lindbergh was startled at the ferocious depth of anti-British feeling.
60 It's beyond my depth when it comes to natural sciences.