shallow

adjective

• 1of little depth:serve the noodles in a shallow bowl being fairly shallow, the water was warm
• situated at no great depth:the shallow bed of the North Sea
• varying only slightly from a specified or understood line or direction, especially the horizontal:a shallow roof
• (of breathing) taking in little air.

• 2not exhibiting, requiring, or capable of serious thought:a shallow analysis of contemporary society

noun

• an area of the sea, a lake, or a river where the water is not very deep.

verb

• (of the sea, a lake, or a river) become less deep over time or in a particular place:the boat ground to a halt where the water shallowed