Shotgun marriages have been a common occurrence throughout history, but it's not always appropriate or kind to use this term. There are many more appropriate synonyms that can be used in place of the term "shotgun marriage." One common alternative is "forced marriage," which suggests that the two parties involved did not enter the union willingly. Another more modern phrasing is "surprise engagement," which removes the negative connotation from the situation and makes it seem more like a romantic surprise. "Hasty marriage" is another way to describe a quick union, which may still carry some negative connotations but is less severe than "shotgun marriage." Lastly, "spontaneous marriage" conveys a sense of carefree excitement and lack of planning, which may be a more fitting description for some quick weddings.