Whoevers is a contraction of the words "whoever" and "is." It refers to any person who is involved in a situation or event. There are several synonyms that can be used in place of whoevers, depending on the context of a sentence. For instance, one may use the term "participants" when referring to a group of people who are actively engaged in an activity. An alternative is the term "those involved," indicating that individuals are associated with an action. Another possible synonym is "all concerned," which signifies that individuals are affected in some way. Overall, using synonyms for whoevers can help to vary the language and add more sophistication to writing.