The Vietnamese word "nghiêm cẩn" can be understood as "solemnly respectful" or "serious and careful." It describes a way of behaving or an attitude that conveys seriousness, respect, and attentiveness, especially in situations that require care or consideration.
While "nghiêm cẩn" primarily conveys seriousness and respect, depending on the context, it may also imply a sense of authority or formality.