The crossword solution for the term 'Bad Kind of Butterflies' is 'ANXIETY'. ANXIETY is a feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome. It is a normal emotion that everyone experiences from time to time, but when it becomes excessive and persistent, it can interfere with daily life. ANXIETY disorders are the most common mental health disorder in the United States, affecting 40 million adults in the United States age 18 and older.