The antonym for the word "more unworried" is "more anxious." Anxious means to be worried, concerned or nervous about something. A person who is anxious is usually worried about an impending event or an uncertain outcome. It is the opposite of being unworried or carefree. In life, we all encounter situations that make us anxious, such as an important exam, a job interview, or a first date. However, it's important not to let these worries consume us, and instead, find ways to manage our anxiety and strive towards greater peace of mind.