There are several synonyms for the phrase "fall dead" that can add variety and depth to one's writing. One option is to use "collapse lifeless," which emphasizes the suddenness and lack of movement after death. Another option is "perish," which can connote a sense of tragedy or a natural end to something. "Succumb" implies defeat or failure, while "expire" refers more specifically to the moment of death. "Demise" is a more formal or literary way of describing someone's passing. By utilizing different synonyms for "fall dead," writers can create a more nuanced and impactful narrative.