The phrase "dropt the curtain" can have various antonyms depending on the context. In a theater setting, antonyms may include "raised the curtain," "opened the curtain," or "unveiled the stage." If the phrase refers to ending a performance or event, antonyms may include "extended the show," "continued the event," or "prolonged the experience." Alternatively, the phrase could have a metaphorical interpretation, such as when referring to the end of a chapter in one's life. In this case, antonyms may include "opened a new door," "began a new chapter," or "started a fresh page." Ultimately, the antonym for "dropt the curtain" will depend on the context in which it is used.