Definition of "Shallow" :

noun: a stretch of shallow water

verb: become shallow

"The lake shallowed over time."

verb: make shallow

"The silt shallowed the canal."

adjective: lacking physical depth; having little spatial extension downward or inward from an outer surface or backward or outward from a center

"Shallow water."

adjective: not deep or strong; not affecting one deeply

"Shallow breathing."

adjective: lacking depth of intellect or knowledge; concerned only with what is obvious

"Shallow people."