[syn: shallow, shoal]
ADJECTIVE (3)
1.  lacking physical depth;  having little spatial extension downward or inward from an outer surface or backward or outward from a center; 
- Example: "shallow water"
- Example: "a shallow dish"
- Example: "a shallow cut"
- Example: "a shallow closet"
- Example: "established a shallow beachhead"
- Example: "hit the ball to shallow left field"
2.  not deep or strong;  not affecting one deeply; 
- Example: "shallow breathing"
- Example: "a night of shallow fretful sleep"
- Example: "in a shallow trance"
3.  lacking depth of intellect or knowledge;  concerned only with what is obvious; 
- Example: "shallow people"
- Example: "his arguments seemed shallow and tedious"
The Collaborative International Dictionary of English v.0.48:
Shallow \Shal"low\, n.
   1. A place in a body of water where the water is not deep; a
      shoal; a flat; a shelf.
      [1913 Webster]
            A swift stream is not heard in the channel, but upon
            shallows of gravel.                   --Bacon.
      [1913 Webster]
            Dashed on the shallows of the moving sand. --Dryden.
      [1913 Webster]
   2. (Zool.) The rudd. [Prov. Eng.]
      [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Shallow \Shal"low\, v. t.
   To make shallow. --Sir T. Browne.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Shallow \Shal"low\, v. i.
   To become shallow, as water.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Shallow \Shal"low\, a. [Compar. Shallower; superl.
   Shallowest.] [OE. schalowe, probably originally, sloping or
   shelving; cf. Icel. skj[=a]lgr wry, squinting, AS. sceolh, D.
   & G. scheel, OHG. schelah. Cf. Shelve to slope, Shoal
   shallow.]
   1. Not deep; having little depth; shoal. "Shallow brooks, and
      rivers wide." --Milton.
      [1913 Webster]
   2. Not deep in tone. [R.]
      [1913 Webster]
            The sound perfecter and not so shallow and jarring.
                                                  --Bacon.
      [1913 Webster]
   3. Not intellectually deep; not profound; not penetrating
      deeply; simple; not wise or knowing; ignorant;
      superficial; as, a shallow mind; shallow learning.
      [1913 Webster]
            The king was neither so shallow, nor so ill
            advertised, as not to perceive the intention of the
            French king.                          --Bacon.
      [1913 Webster]
            Deep versed in books, and shallow in himself.
                                                  --Milton.
      [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Rudd \Rudd\, n. [See Rud, n.] (Zool.)
   A fresh-water European fish of the Carp family (Leuciscus
   erythrophthalmus). It is about the size and shape of the
   roach, but it has the dorsal fin farther back, a stouter
   body, and red irises. Called also redeye, roud,
   finscale, and shallow. A blue variety is called
   azurine, or blue roach.
   [1913 Webster]
WordNet (r) 3.0 (2006):
shallow
    adj 1: lacking physical depth; having little spatial extension
           downward or inward from an outer surface or backward or
           outward from a center; "shallow water"; "a shallow dish";
           "a shallow cut"; "a shallow closet"; "established a
           shallow beachhead"; "hit the ball to shallow left field"
           [ant: deep]
    2: not deep or strong; not affecting one deeply; "shallow
       breathing"; "a night of shallow fretful sleep"; "in a shallow
       trance" [ant: deep]
    3: lacking depth of intellect or knowledge; concerned only with
       what is obvious; "shallow people"; "his arguments seemed
       shallow and tedious"
    n 1: a stretch of shallow water [syn: shoal, shallow]
    v 1: make shallow; "The silt shallowed the canal" [syn:
         shallow, shoal]
    2: become shallow; "the lake shallowed over time" [syn:
       shallow, shoal]
Moby Thesaurus II by Grady Ward, 1.0:
100 Moby Thesaurus words for "shallow":
   airy, amateur, amateurish, ankle-deep, asinine, bank, bar,
   birdbrained, birdwitted, catchpenny, coral reef, cursory, dabbling,
   depthless, dilettante, dilettantish, empty, epidermal, fatuous,
   featherbrained, few, fill in, fill up, flat, flighty, flimsy,
   fluffy, foolish, footling, ford, fribble, fribbling, frivolous,
   frothy, futile, half-assed, half-baked, half-cocked, idle,
   immature, inane, inconsequential, inconsiderable, insignificant,
   jejune, knee-deep, light, little, low, meager, miniature,
   negligible, no great shakes, not deep, nugacious, nugatory,
   on the surface, otiose, petty, picayune, picayunish, reef,
   sandbank, sandbar, sciolistic, shallow-headed, shallow-minded,
   shallow-pated, shallow-rooted, shallow-witted, shallows, shelf,
   shoal, shoal water, shoals, short, silly, silt up, skin-deep,
   slender, slight, small, smattering, sophomoric, superficial,
   surface, thin, tidal flats, tiny, trifling, trite, trivial,
   unimportant, unprofound, vacuous, vain, vapid, volatile, wetlands,
   windy