become shallow
a stretch of shallow water
make shallow
lacking depth of intellect or knowledge; concerned only with what is obvious
lacking physical depth; having little spatial extension downward or inward from an outer surface or backward or outward from a center
not deep or strong; not affecting one deeply
quick to understand
unobtrusively perceptive and sympathetic
able to make or detect effects of great subtlety; sensitive
having or revealing keen insight and good judgment
