"Fell dead" is a common phrase used to describe someone or something that has suddenly died. However, there are several synonyms that can be used to express the same idea, including "dropped dead," "collapsed," "ceased to be," "perished," "passed away," "met their demise," or simply "died." Each of these phrases can be used in different contexts to convey the same tragic event, but each has its own unique connotations and implications. Whether it's a sudden heart attack or a long illness, the use of an appropriate synonym can help to bring greater depth and nuance to the narrative of a person's death.