The antonyms for the word "overemotionalism" include emotional restraint, composure, equanimity, self-control, detachment, impassivity, stoicism, and phlegm. These words indicate the opposite of "overemotionalism," which is the state of being excessively emotional or sentimental. Emotional restraint refers to the ability to control one's emotions and to maintain a calm and composed demeanor. Composure implies a state of tranquil self-possession and an absence of agitation or excitement. Equanimity suggests a steady and balanced disposition, particularly in challenging situations. Detachment denotes a lack of emotional involvement, while stoicism and phlegm both connote a calm, stoic acceptance of life's ups and downs.