shal‧low comparative shallower, superlative shallowest
measuring only a short distance from the top to the bottom [≠ deep]:
a shallow river
The lake is quite shallow.
the shallow end of the pool
Place the meat in a shallow dish.
not interested in or not showing any understanding of important or serious matters - used to show disapproval:
a shallow argument
If he's only interested in your looks, that shows how shallow he is.
breathing that takes in only small amounts of air [≠ deep]
He lay there unconscious, breathing shallowly.
—shallowness noun [uncountable]