non buoyant

/ˌnɑnˈbɔɪənt/
adjective
  1. Unable to float in a liquid; tending to sink.
    • Non-buoyant objects like metal coins drop quickly in a lake.
    • The swimmer's heavy boots made her non-buoyant in the pool.
    • A rock is non-buoyant in water, so it sinks to the bottom.
  2. Lacking lightness or cheerfulness; heavy or gloomy in mood.
    • The movie had a non-buoyant tone that left the audience feeling thoughtful.
    • His non-buoyant mood made the party feel sad.
    • After the bad news, the atmosphere in the room was non-buoyant.
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Antonyms
What does "non buoyant" mean? | whatsthatwordmean | whatsthatwordmean