A mortal wound is a severe or fatal injury that can lead to death. However, there are several other words that can replace the term "mortal wound" depending on the context. Some possible synonyms include "fatal injury," "lethal wound," "death blow," "killer wound," "deadly wound," and "mortal strike." Each variation presents a slightly different connotation, but all refer to a serious injury that can result in the loss of life. It is worth noting that these terms are often used interchangeably in literary works and medical reports. Therefore, it is essential to determine the contextual meaning to accurately interpret the intended message.