shallows; shoal; sandbar

light color

superficial

to merely have a sip or a bite (of one's food or drink); (fig.) to dabble in; to flirt with (a topic)

shallow study; superficial; scant knowledge

superficial; shallow

to run aground; to become stranded; (fig.) to run into difficulties and come to a standstill; to stall

skin-deep; superficial; shallow

to silt up

deep or shallow; depth (of the sea); limits of decorum