1) She broke up with him in a cold-hearted manner, without showing any emotion.

2) The villain in the movie was portrayed as a cold-hearted criminal who had no regard for human life.

3) Despite seeing the puppy shivering in the rain, she remained cold-hearted and refused to take it in.

4) The dictator was known for his cold-hearted decision-making that caused suffering for his people.

5) Her ex-boyfriend described her as a cold-hearted woman who only cared about herself.

6) The cold-hearted actions of the CEO led to the company's downfall and loss of many jobs.

7) The cold-hearted judge handed down a harsh sentence without considering the defendant's circumstances.

8) After being betrayed by his best friend, he started to become more cold-hearted towards others.

9) The novel's antagonist was a cold-hearted character who stopped at nothing to achieve his goals.

10) Despite the plea for help, the cold-hearted stranger turned a blind eye and walked away.