The Vietnamese phrase "đang tâm" can be translated to mean "callous" or "cruel." It refers to a person who shows a lack of empathy or compassion, especially in serious situations. This term often carries a strong negative connotation, implying that someone is willing to commit harmful or violent acts without remorse.
Simple Example: "Tên tội phạm này thật đang tâm."
(This criminal is truly callous.)
More Complex Example: "Họ đang tâm giết hại những người vô tội."
(They are callous enough to harm innocent people.)