The word "unperturbable" means calm and composed even in the face of adversity. Its antonyms are words that indicate a lack of calmness or equanimity. Some of the antonyms for "unperturbable" include anxious, agitated, nervous, restless, uneasy, jittery, apprehensive, jumpy, and edgy. These words convey a sense of discomfort and unease, which is the opposite of "unperturbable." They describe people who are easily overwhelmed by stress or anxiety and are unable to remain calm and collected. An understanding of these antonyms can help us to appreciate the value of maintaining an unperturbable disposition in the face of life's challenges.