The Vietnamese word "tử tế" is an adjective that means "kind" or "decent." It is used to describe someone who is good-hearted, respectful, and treats others well. When you call someone "tử tế," you are acknowledging their positive qualities and their considerate behavior towards others.
In summary, "tử tế" is a versatile and positive adjective that highlights kindness and decency in people. It can be used in various contexts to express appreciation for someone's good nature or actions.