shallow

become shallow

“the lake shallowed over time”

a stretch of shallow water

make shallow

“The silt shallowed the canal”

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

“shallow people”

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

“shallow water”

not deep or strong; not affecting one deeply

“shallow breathing”