The Vietnamese word "duy tâm" translates to "idealist" or "idealistic" in English. It refers to a philosophical viewpoint that emphasizes the importance of ideas, thoughts, and mental constructs over material or physical reality.
While "duy tâm" primarily refers to philosophical idealism, it can also imply a sense of unrealistic optimism or naivety in everyday conversation, where someone might be described as "duy tâm" if they hold overly idealistic views that don't consider practical realities.