shallow (

     adj 1: lacking physical depth; having little spatial extension;
            downward ("shallow water"; "a shallow dish"); or
            inward from an outer surface ("a shallow cut"); or
            backward ("a shallow closet"; "established a shallow
            beachhead"); or outward from a center ((sports) "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 : a stretch of shallow water [syn: shoal]
     v 1: make shallow; "The silt shallowed the canal" [syn: shoal]
     2: become shallow; "the lake shallowed over time" [syn: shoal]