"Ex temporize" refers to the act of improvising or acting without proper planning. Its antonyms refer to preparedness, organization, and pre-planning. For instance, words like "plan," "organize," "anticipate," "arrange," "systematize," "schedule," and "premeditate" are antonyms of "ex temporize." They imply a well-planned and strategic approach towards any task. Knowing these antonyms can help to avoid haphazard and rushed decision making in favor of a more structured and organized approach. These antonyms remind us of the importance of pre-planning, especially in critical situations where rushed decisions can have severe consequences.