Antonyms for the term "chronic childhood mercurialisms" would be words describing stability, consistency, and control. For instance, words like measured, steady, constant, and consistent would denote a more regular and predictable disposition. On the other hand, impulsive, erratic, and volatile are some other antonyms for "chronic childhood mercurialisms." These traits can prove to be challenging to navigate for both the individual with these characteristics and those around them. Being aware of one's emotional state and taking intentional steps towards regulating them can help mitigate the impact of chronic childhood mercurialisms. Therefore, cultivating qualities such as balance, orderliness, and patience can prove crucial in managing an individual's emotions and behavior.