one's heart sinks

idiom

Definition of one's heart sinks

used to say that someone becomes sad or disappointed about somethingMy heart sank when I saw the pained expression on her face.

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“One's heart sinks.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one%27s%20heart%20sinks. Accessed 28 Sep. 2020.

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