1.   But when I saw him, my heart sank.

2.   For a moment his heart sank, as he thought she might be cancelling their meeting.

3.   Gerald Hussey saw his wife looking at him in triumph and felt his heart sink.

4.   Her heart sank when she saw the number of books she had to read.

5.   His heart sank the way it always did when she left him.

6.   His heart sank, his faint hope of creating an opportunity to escape crushed.

7.   Honor thought she was the most exquisite girl she had ever seen and her heart sank lower than ever.

8.   I am a labor lawyer, and my heart sinks.

9.   My heart sank and numbness took over.