A "callous act" refers to a behavior or action that shows a complete lack of concern, empathy, or sensitivity towards others. It implies that the person is being cold-hearted or indifferent in their actions. Full definition
These progressive jurisdictions have expanded the role of government to include protecting animals from unfettered callous acts that cause pain or suffering. (animallawcoalition.com)
Researchers believe that an abnormally low resting heart rate indicates a lack of fear, which predisposes people to callous acts of crime. (babygaga.com)
«Our family is grieving that a man in the prime of his life who has impacted so many lives could be struck down by such a callous act,» the family said in a statement. (chicagotribune.com)