Delirium cordis refers to a state of extreme excitement or agitation. Its antonyms include calmness, tranquility, serenity, and peacefulness. These terms signify a state of relaxation and contentment, devoid of any restlessness, anxiety, or frenzy. Other antonyms of delirium cordis are composure, equanimity, and detachment, which imply a lack of intense emotions and a rational, objective mindset. Moreover, sobriety, moderation, and restraint oppose delirium cordis by representing a controlled and temperate behavior. In essence, the antonyms of delirium cordis describe an absence of extreme emotions or actions, a state of being composed, tranquil, and peaceful.