Use 'plaintive' to describe sounds conveying a deep emotional tone of sadness. Her voice was plaintive as she spoke of the disaster.
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Musical Context
'Plaintive' often describes music or sounds, suggesting a haunting or sorrowful quality. The violin's plaintive melody echoed through the hall.
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Personification
Can be used to give human emotion to inanimate objects or abstract concepts. The wind carried a plaintive whisper that seemed to mourn the end of summer.