shallow

/ˈʃæloʊ/
noun
  1. A shallow area in a body of water (often used in the plural).
    • Fish often gather in the shallows to feed.
    • We waded through the shallows to reach the sandy beach.
    • The boat got stuck in the shallows near the shore.
adjective
  1. Having only a short distance from the top to the bottom; not deep.
    • The kids played in the shallow end of the pool.
    • Be careful — the water here is very shallow, and you might hit the bottom.
    • We crossed the river at a shallow spot where the water only reached our knees.
  2. Not showing serious thought, feeling, or understanding; superficial.
    • The movie was entertaining but had a shallow plot.
    • Don't be fooled by her shallow compliments; she doesn't really mean them.
    • He only cares about looks and money — he's so shallow.
  3. (of breathing) Taking in only small amounts of air; not deep.
    • The patient's breathing was shallow and rapid.
    • Try not to take shallow breaths when you're nervous; breathe deeply instead.
    • The doctor noticed his shallow breathing and ordered an oxygen mask.
Antonyms
verb
  1. To become less deep, or to make something less deep.
    • Over time, the lake shallowed due to sediment buildup.
    • They had to shallow the channel so boats could pass safely.
    • The river shallows as it approaches the delta.