shallow in WordNet English dictionary

1. a stretch of shallow water
   shoal  shallow 
   

1. become shallow
   "the lake shallowed over time"
   shallow  shoal 
   
2. make shallow
   "The silt shallowed the canal"
   shallow  shoal 
   

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"
   shallow 
   
2. not deep or strong; not affecting one deeply
   "shallow breathing"; "a night of shallow fretful sleep"; "in a shallow trance"
   shallow 
   
3. lacking depth of intellect or knowledge; concerned only with what is obvious
   "shallow people"; "his arguments seemed shallow and tedious"
   shallow